Here's a method that might or might not work. I took the animation I wanted (in this case, Wario's bite), extracted it, and put it on the .pac file with the model I wanted (in this case, FitKirbyMario00.pac.) Then I renamed it to FitKirbyWario00.pac so he would get that hat when he inhaled Wario.
The result can be seen here courtesy of MnSG.

.pac is also needed for using the textures in Classic mode.

That's what the N64 Captain Falcon texture looks like. Love it.

[Wario Land: Shake It! music folder]

I was playing Wario Land one day, and I thought of something: "Hmm... I wonder if the music in this game is stored in the same format as Brawl music?" Turns out, it is!
So, considering the dearth of good music on the WarioWare stage in Brawl, I dumped all the game's BRSTMs and renamed them to match Videogame Scrapbook's version. I have a feeling they dumped the BRSTMs and converted them to MP3, since every song matched up perfectly. And if it weren't for them, I would be completely lost as to which song was which and you would be getting names like "ninten_W1_kari_MIX-32k16b" and "AFRICA-INT-CUT". So give them a round of applause

I uploaded the .brstms to a folder on Mediafire. If you want to know what you're getting, download the Videogame Scrapbook album to listen to the MP3s, then download .brstms of the ones you like.
Wario Land: Shake It! music folder

If you want to download them all, the download is split into three 7-zip archives due to its size:
Download Part 1
Download Part 2
Download Part 3 (Bonus)
Each contains a list of original file names on the disc and a README.

If you just want the first level (Stonecarving City), here it is:
1-02 Stonecarving City.brstm

(preview)

It fits nicely with Wario's victory theme, because both are remixes of his theme from Wario World.

It is usually possible to retexture "flat-faced" characters like Kirby and Jigglypuff fully without ever touching Photoshop. (These are the characters with more than one EyeYellow image.) GIMP can do some of the same things with the alpha channel, albeit more awkwardly.

Note: This only works if you plan on keeping the character's eyes the same size, shape and position as the original.

1. Load your new FS eye image (including background) into GIMP.

2. Also load the .tga file you wish to replace. (I use ASH to extract and rebuild my .pac files; BrawlBox might work but I'm not sure.)

3. In the first image, go to Edit>Copy Visible to copy what you see.
4. Select the second image. In the Channels pane (), deselect Alpha so only Red, Blue and Green are highlighted (see picture.)

5. Go back to the Layers pane () and press Ctrl+V to paste. A new layer will appear called "Floating Selection (Pasted Layer)". Right-click on it and choose "Anchor Layer".

The appearance of the image shouldn't have changed much when you anchored the layer. If it did, you probably did step 4 incorrectly.
6. Now you should be able to save the .tga file and it should work in Brawl.
7. If you want to be sure, go back to the Channels pane, select only Alpha (and deselect Red, Blue and Green). Press Ctrl+, to fill with black (assuming black is the foreground color, which it probably is.) Your original image should appear. If it does, you're good. Close WITHOUT saving (don't worry, you saved in step 6.)

I'm not the best at explaining it, so if you need clarification, just ask. It's a lot easier for me to do it in GIMP, since my Photoshop trial ran out and I don't want to buy or pirate it.

That Wario hat is way better than mine. I'll be grabbing that for sure.

You should try putting FitFalco00.pcs on Capt. Falcon and texturing that

Someone ought to make one big page with all the Melee textures ported to Brawl. I know Poodas did all of Kirby's textures a while back.

Always nice to see Suketoudara

[if you are editing CSPs you can index it from within GIMP]

And just a note - this doesn't work for CUPASH, but if you are editing CSPs you can index it from within GIMP - and it somehow works. The world operates in strange ways indeed.

[Irfanview can only save indexed images in 256, 16 or 2 colors,]

It's well known that the way GIMP saves indexed TGA files doesn't work well with ASH. But I've found a simple way to edit some (not all) of the indexed +1/+2 files without using Photoshop (since my 30-day trial ran out.)

1. Open the image in the GIMP.
2. Change any transparency to magenta, just like you would in Photoshop.
3. Make your edits.
4. When you're done editing, don't index it just yet. Save it as a regular RGB color TGA.
5. Get Irfanview (http://www.irfanview.com/) and open your TGA in it. Go to Image>Decrease Color Depth.
6. Here, Irfanview can index your image for you. But here's the catch: Irfanview can only save indexed images in 256, 16 or 2 colors, even if you put another number in the Custom box. This worked out well for Sonic's eyes - but not so well for CUPASH.
7. Go to File>Save and save over the old TGA.
8. Run step2_create.bat, of course!

I was very happy when I found this. I'm much more comfortable in the GIMP anyway, so I'll probably just use that from now on.

Sometimes this won't work, and ASH won't accept the file. If this happens, try using GIMP itself to index the image. If neither works, you've gotta use Photoshop.

[doesn't]

As far as I can tell , Brawl seems to completely ignore the FS eyes' alpha layer. For my new textures, I just paste the yellow part of the Final Smash eyes over the regular eyes and save that as the FS eye image with GIMP (not editing the alpha layer), and I don't notice any problems in-game.

This is how I originally figured out it might work:

These are my edited textures - except the Final Smash eyes, which are the versions extracted by ASH and are not edited.

EDIT: Okay, so maybe this doesn't work all that well:

If you're using Photoshop, save it as a normal PSD. Then when you're done, save a copy as TGA and use that in CUPASH (it only takes TGA.)

The CSP/CUPASH guide pointed to in the noob help topic is hosted at Meowmix. Or should I say "not hosted" after the merger
Anyway, I made my CSP, following

this youtube guide

, but it won't show up in game. Is there some useful guide to help iron out kinks like this?

Nice! I might temporarily displace some of my current Kirby textures for these.
I think green Kirby looks better in Melee than Brawl. Not a big fan of the red feet.