The level of detail in both icons is absolutely stunning and it's interestng to see them put side-by-side with their initial sketch. Alll in all, icons building by ~st-valentin are two small icon-masterpieces! (
The lighting on the windows is wrong. It was actually much better in the sketches. Other than the lighting though the execution is fantastic and I think one can only be impressed by this. Also fantastic insight into your work process; it's wonderful to see your sketches next to the final products.