I really like the concept of this piece! It feels like there's a whole story behind the image. The colour theory is sound as well - with the lit clouds drawing the viewer's attention to the dragon and tower.

If I may offer a small critique about the composition: I feel that the piece would have been more effective if you had composed the image with the tower a little closer to the dragon's nose - so that both the dragon and the tiny person would fit the Rule of Thirds. As it stands, the focus goes directly to the dragon's head, and the tower-dweller becomes a secondary element.

Overall, though, it's a lovely, whimsical piece, and I really enjoyed it. Thanks for sharing!