Um . . . not to be rude, I'm sorry if this is just a coincidence, but this bears a strong resemblance to a peice in my gallery from a while ago- [link] - I admit that here are some coloration differences and yours lacks the weather, but the cliff, black dragon, purple wings, and background color are the same . . . Again, I'm really very sorry if this is just coincidental, and I do love your art . . .