Hey there! The boxes are looking really good overall! I don't see any major issues. :) My only question is whether these boxes are meant to be drawn in two-point perspective or three-point perspective. If they're two-point perspective, I only made some very minor adjustments to the convergence on a few of them, the errors were barely noticeable. If the exercise is meant to be in three-point perspective, though, I'd recommend pushing the convergence toward the third vanishing point a bit more so the cube's distortion becomes more apparent. Other than that, I don't have much else to add. Keep it up! | Artwod Feedback