Wow, I was just about to head to bed, good thing I checked the thread one last time before then.
It's always nice to see the club room drawn as the background. Accurate too with the screen on the left and how the basement is boarded up, so props for that.
I have to say, Yuuko's clothing is sticking awfully close to her body. So either her clothes are skintight, or she's sweating so much that everything is just sticking. I'm perfectly okay with either of those as it allows for her gorgeous curves to be on display.
I also very much enjoy how you depicted her thighs in such a powerful manner. The shading especially makes them look strong and defined. God I want to be crushed between those thighs, sending me to softness heaven.
As for your colors, they seem fine to me. Sure, the skin tone might be a little different than normal, but with the ambience of the club room, I think it fits quite well.
Thank you for drawing Yuuko for me! It's a wonderful delivery, and I do like it a lot!
Please have a wonderful weekend because you deserve it.