Do you mean like, not noticeable in-games, or not major texture hats

Is it a ModelTexture? If it is then it might be your ModelTexture isn't compatible with the original Luigi PSA, and if it's a texture, then I'm stumped.

open up the CSS in brawl box and go to the right box, there should be an textbox for both x and y sizes

I think the reason that they aren't showing up is because the CSS that you're using doesn't show Giga Bowser and Co. (For example, if you download MasterLinkX's Custom Pack, wanted GB and WM, you would have to get a new CSS that has GB and WM on the screen, like ASF1nk's Dark Blue CSS)

thx. ill keep that in mind.

If I were to make a custom pack and post it on the Brawl Vault, would I have to ask for permission to use it in a custom pack first or could I just give credit to them when I post it? 

It's most likely the PSA and Texture/ModelTexture don't work together, for example: If you were to use the Cloud PSA (Ike Version) with Ichigo, then when Ichigo-Cloud uses Firaga, then he'll do his T-Pose and Firaga will be in his body, and will be frozen until hit.

open up the CSS in brawl box and go to the right box, there should be an textbox for both x and y sizes

Thanks you so much! Now I can make a successful CSS! Also about the icons, the independent pkmn would be icons 37, 38 39? And what would sheik, zss, gigabowser, warioman, and the alloys be?

EDIT: Never mind the earlier edit, but from what I read a little while ago, Icons 40-50 are all fillers, and you can make your own with them?

I know that it is possible to edit the size of the CSS's Character Portraits (like this one:), but how? Also, what are all the unnamed icons and their location?
--8o8Dark