Refrain from posting 4 times in a row, try to condense your posts in one or two at most if you don't have enough updates. I'm going to merge some of your posts now.
Also posting gifs might slow down the page loading times. I'm going to put those in spoilers.

Done.

To further illustrate on the old Capcom arcade aspect ratio topic, hopefully this image can be of some help:

The same tools you use to draw anything, you use them to make CPS2 sprites. The only thing that differs is how they're drawn, no software will tell you how to do that: there's plenty of reference from the Capcom games, use those.