Class with Pamela - Black & White Still Life

I am taking an online class with Pamela Allen. We will be having 4 lessons over the next 4 weeks. For Lesson 1 we are supposed to create a still life using black and white fabrics. Here it is in progress. Looking at it now, I think I need to fix the angle on the seat of the left chair, and angle the verticals on the right chair so they point toward the center. And I have moved the left cup up, so it isn't in such a straight line with the glass and chair.

Pamela and others have made some suggestions which I am considering, and then I will sew it together today or tomorrow.