For uploading issues....not sure how you guys are currently trying to get the images here, but first I would use the gallery or an
Approved Hosting Site. If you're still having trouble send me a PM and I'll see what I can do.
Just a note, if the file is pretty big, it might not upload to the wiki. Another editor has already tried to upload some bigger animations without success. My suggestion would be to reduce the number of frames and to simplify/shorten some of the animations.
Another note, I've been trying to do some of these myself...you'll notice I updated the list some. I'll keep the list up to date as I work. Granted the list is not complete, lol....so if you're not sure if we still need something either post and ask or check the item's wiki page (animations I made are added onto the appropriate page pretty quickly).
Thanks for wanting to help! I'm trying to help too, and learning a lot in the process, lol