Yo, really nice work! A good part of doing these exercices is to try to get into the mind of the original artist so you can grasp how they did some of what they did, to get the "Essence" so to speak, and eventually to apply it in your own work. And I think you did so really well! There obviously some differences, but the end results look really close to what the originals did.
It's nice you added the name of the artists references, it helps us if we want to go and look for more work from them, though don't worry about using them. Using references for studies is standard practice.