I understand. That's interesting! And you are not a pigeon because you never said the deadline for translation, and also I never asked people their deadline.
By the way, I like the call of pigeons "クルッポー（kuruppoo）" in the Japanese famous manga One Piece. It sounds nice.
I usually use PNG format for my apps, and I can't say more detailed things because it depends on apps. For example, about the size of Mikage in Sakura blade, it is basically 36x60 pixels, and there are 18 patterns of poses (in addition, she swing her arms while charging). Of course I have to get bitmaps for all the characters (it's weird if only Mikage is a bitmap character), so it will be hard work for designers. That's why I said "if you like drawing, I might be able to use your work". If you don't like drawing very much, you won't be able to finish the work.
I know you are good at drawing, so I might be able to use your work for single picture (sorry I don't know how to say it in English. A single cut is better? It's used for describing each scene, not animation). For example, it might be good if I use your Mikage's picture while loading or intermediate of stages.