Good choice of images and good job on the coloring. Only the blending needs some work. The lower edges of the girl are too soft. I think they need to be sharper and needs a little shadow (just a very thin line). There is a lot of empty space above the girl; it would look better if you placed the girl more to the side of the image, crop a large part from the top, and moved the moon to the open space.
But overall it's a nice image

I think I'd prefer the roses to be more prominent in the picture - but I love the scene that you've created. Well done

Nice idea. The top part could maybe do with a touch up where at the waistband area to integrate it better,

The shininess of the lens flare doesn't really fit the texture of the rose as perfectly as it could have - I wonder if it could have been dampened somewhat. Good luck.