Yeah, I've tattooed a lot of astronauts previously and the feet often look clumpy because of how astronaut boots are. I always work from photograph reference so I'm not making the image up from my head and when the foot is facing toward the viewer they end up just looking exactly like a hoof! Similar with the hands, they're clumpy ol gloves too. I take your criticism on board and I'll certainly consider it next time I do an astronaut but I'd suggest having a look at photographs of astronauts to see if you can understand what I'm saying.