Wonderfully done! And don't get sidetracked by hair colour comments. Tolkien called many dark haired characters fair: Boromir, Frodo and Arwen for example. Just go what feels right to you. But this image is a huge huge inspiration for a novel that I will write for a friend of mine. So thanks!!!
I don't think Tolkien ever explicitly states that Celegorm is blonde. He is called "Celegorm, the fair", the elvish word for fair meaning both blonde and beautiful. So it could be interpreted that Celegorm is beautiful. I personally envisioned Celegorm much like your picture (which is beautiful btw).