Thanks!
In regards to the skin, I actually have Mine-imator for that part. Mine-imator is an application you can use to make your own animations with Minecraft skins and models and what not. Basically to get the spinning part, I posed the Mega Man model in the form I wanted, then I changed his rotation by 5 degrees for a slightly new angle in every new keyframe. Once I hit 360 degrees, I adjusted the lighting on the animation to angle the sun and shadows where I wanted them. Once that was done I went ahead and removed the ground and sky and rendered the animation into a MP4 file. I found a website that I can link ya to that I used to convert the "movie" I made into a gif file. Since I used blank backrounds I had no problem cropping the gif down into just enough space for Mega. To fit the Minecraft page I went on the "Resize" tab of the site to shrink it super small. Finally I upped the speed to one I thought worked best, added a text of what exactly it was, then exported it!

Lots of information haha feel free to DM me if you want any specifics. I may end up making a tutorial if I'm asked more, but we'll see. Hope this helps!

-Z