Hi Dennis, you have really cool ideas, but to make them really shine, I think your values are too close together. Your darks could be darker and the lighter values maybe lighter. Also, your blue underdrawings are pretty dark. If you drew those lighter, they might vanish, when you fill your drawings with values. Honestly, I always start drawings with pencil, when I want to fill in values. To make sure, that the underlying lines will be gone when I'm done. I hope, this was helpful :)