Hi, I'm new and I'll feel really silly if this turns out to be in the memories, but I can't seem to find it. Feel free to direct me there and delete this post if it is.

I'm just starting on animated icons, I literally have not opened imageready until today except once to examine an icon somebody made and see how it works. Whenever I make a new frame, it seems any edits I make in it also happen to the frame before it. There's probably a silly mistake I'm making but I can't for the life of me figure it out. I know what I'm doing with everything except those darn frames. Does anyone know what I'm doing wrong?