I love how the vault got a visual upgrade, so I thought I'd post this in an attempt to raise the quality of other things too, to start off, download previews.
Anyway, I've made a simple template that can be used as a thumbnail on character hacks, all you have to do is open the smart objects in the PSD file and replace them with your own images, you can grab the template here:
http://www.mediafire.com/download/swlu3t02mv1tkvo/Old+Character+Template.psdTo use it, just set your preview images in a submission normally and then delete all of the auto generated thumbnails and replace the first one with a link to the template for whatever mod you make it for.
Here's a preview of what it looks like when filled out:
It's a pretty simple preview but having something that stands out a little can go a long way, let me know what you think!