Hi, Beike. If you want to share animation material you have made, such as sprites, simply post the images in the Animation Repository topic, or the Animation Directory, and ask people to format them for you ingame. There are a lot of cool modders here who would be happy to edit your sprites to work ingame, especially if you're making them publicly useable.
Of course, you can also learn how to format them yourself. I believe there is a tutorial somewhere. Maybe someone else knows where it is...?