You have to be very careful with asymetrical designs. I would model the shape quickly in foam and ask people to grab it without telling them how they’re supposed to. You may be surprised, then take that info and go back to the sketches. At this stage I’d stay away from the IL renderings, it’s flattening everything out without really giving more info. Keep with the sketches and get the forms worked out with that and some rough foams. Save the illus for the final fine-tuning of your form and color combos. Good luck, seems like a nice project, lots of potential.