I just got done submitting a new skin. It's a clean process that is nicely organized. However I would make some suggestions for changes.
1. If there is an error of some kind, (ASCII, file name, etc) take the person back the the already completed form or don't go to another page at all if there is an error of some kind. Just mark the error. Currently it takes you back to a blank form and everything has to be redone. This can be quite lengthy and time consuming if you've typed in a lot of information. (like my 4 times)
2. When finished and the submission is accepted, there is no link to the management page, only back to the submission form.
3. The two places that showed upload the dude1 and dude2 files should be open to any extra files. What about materials.txt, bump files and specular files?