Hi! I like your linework, I think the proportions of the arm to the rest of the body don't match, so it's not all in one perspective. You could pick a perspective where you're looking at the figure front on by making the arm smaller like in the first image. OR: You could change the rest of the body to fit the perspective of the arm being the closest part to the viewer, by thinking of it as looking up at a tower, this means the placement of the facial features would be a little different as you're looking up at the figure. I hope this helps!