This is a really nice work! The shading is nicely done on both characters as well for the folders. I don't want to demotivate you by saying that the female anatomy might be a little weird, or that is the fact that she is in a really strange position. It feels like the male's head is very big,at the female's wast. Also they're hair you can perfectly see that you used photoshop on that, try not use a so very solid colour in this kind of work But despise that this is a great piece! Keep up with the good work!
This is my first critique, I hope it didn't sound to arrogant, but constitutive and I hope you keep on going!