I don't know if this is your final choice of pose or just the one you picked for colour tests, but I think you picked the weakest one. It's a really slow read; you've kind of reduced all body shapes to a sort of lump:
While it's more of an animation principle, a clear silhouette read can still help the clarity of your image a lot:
Both the other images in the 1/2/3 before the colour test read better than the one you picked, and and honestly the ones before that where you're demonstrating the grabbing roots are also much clearer. =)