I want to change the chapter title of FE7 by using some pictures, but I cant find somewhere to do this
Any image editing software will work. If you diagnose your problem more specifically, you should be able to receive more specific answers.
As far as I know, FE7 doesn’t use static images for chapter titles; it draws the text using the textID chosen as the name of the chapter. If you want to change the name of the chapter, all you need to do is change the text that is used for the chapter title (this is in the chapter data table, I believe). If you want to make an entirely new image to use that is not constrained by displaying the text in a textID in the vanilla font used, you’ll have to write ASM for that yourself, as I don’t think it’s been done before.
It seems a bit difficult for me, but I will try to learn how to do it anyway, thank you