>>29969808That's a very scuffed coloring job. You can avoid these kind of white borders on your colored areas by just putting your colors on a different layer (either a normal layer below your lineart or a layer above your lineart set to "Multiply").
As for the muscles, it might be a good idea to do what anatomy anon suggested a while back and look at pictures of female bodybuilders to get an idea of what muscles go where and what that should look like. My main suggestion is to use less hard lines. Especially for abs you can get away with a lot with only a minimum of actual linework and some decent shading.
