All of these are awesome! My favorite is definitely the Smile. The second one looks a little messy, i think the shapes need to be just a little crisper. I dont like the hearts in the first one, they seem like afterthoughts and don't add much to the composition of the image. On the batman one i would like to see the vector you did by itself! I think the final image is great but from what i can see the vector looks equally impressive, without the photoshop additions. Everything looks great though!