Yep, I converted 3D to 2D by using Paint.NET. I traced them in blue, then copied and pasted the 2-D outline in a new picture, then changed them to black, and added the colors and shading as if they were on Sonic X. I also traced a few sprites, too.
Amy in her 2012 Olympics outfit. This was the first one I tried.
This is Amy's pose from Sonic Unleashed. I got a little improved on that.
This is Blaze's Sonic 2006 pose. Blaze was somehow a little tough, but I knew I got the hang of it.
Blaze in her Extreme Riders Outfit. This was pretty easy, a good resemblence to 2-D.
Cream in her Extreme Riders Outfit. I modified the ears to resemble the ones from Sonic X. I did the same with her other poses in this outfit.
Amy in her Extreme Riders Outfit. She's pretty good to work on converting to 2-D. I even converted her other poses in this outfit of hers.
Cream and Cheese from the Super Smash Bros. trophy.
I traced this sprite of Amy from Sonic Advance. It's pretty quick than converting 3-D, but I don't care.
Tails' pose from Sonic Advance. Picasso's great, but I'm not picky.
Tails' falling pose from Sonic Advance 2. A little off model, I think, but you get used to it sometimes.