If you want to make a character, it might just be better using XWE, because it sets the offsets automatically, so they look good in srb2. Not to say that SlumpEd can't change offsets, it just takes a bit longer. Also, I recommend that you actually know how to draw. I say this, because the wad will be better accepted, and it takes more then 100 frames to draw a single character. And sprite rip characters and recolors are always frowned upon.