No focal point, the flow of the sig is all over the place, the dimensions bother me, text doesn't fit with the render, you didn't use a stock, the colors are ugly, only people who are goth like black and white sigs, the lighting is off, there's 2 people... should only be 1, not enough hashtags, idk how you're not good at gfxing yet...
Do I sound like a typical criticizer now?
Looks good, I like how you tried to make the white character seem to blend in more to the background since in the original he just stands out. However, it seems a lil unnecessarily dark in some places.. That's only the case for the colored version, the B/W version is perfectly fine it's just I wish the background wasn't as dark in the B/W one.