Size of images?

I understand everything (at the moment) except what size does the final image have to be to be used?

for what image? coats? anything that fits inside the format. (i believe it's 750x750 max for coat, format is 800x800, but howrse won't accept it if it's too large) if it's just normal graphics, there's no max size.

Thank you. That was what I meant.

no problem ^^