The subtle differences in the many shades of orange is beautiful, and the details in the silhouettes are shown very well! How you captured the sun reflecting off the clouds is brilliant, and the way the orange gradually shifts to the blue is breathtaking!
However, I do think that the tree branches near the top obscure the sky a bit, and in turn, makes seeing the different shades of orange and blue rather difficult. I would recommend perhaps lowering the camera (I don't know how you took the picture, of course) and making it so that the branches are more a border than a major part of the picture.
Either way, this is a terrific picture, and the different hues of orange are brilliant! Fantastic work!