Ok, your placement on the page*or computer file thing rather* is quite good, immediately caught my attention. I like your rendering of your values in this one, your shadows arent too dark, and your highlights arent too blown out. also the white glow effect you put around the horse is a nice touch to help emphasize your subject. I also like the details you have done to the mane as well. The mane i think should be put higher up on the neck, since thats where it usually is. Also the wings on the neck look a bit flat to me, i think with a bit more shading you can make them pop like the ones on the back. the chest seems a bit narrow, but im thinking that could be due to the reference you used*that is if you used any* i like your initial background as it really makes the color of this horse pop and draws my attention more to the subject with teh contrast of the ligher colors of the horse to the darker nature of the background. though im not so sure the lens flare things need to be down in the lower left end, i think your piece wuold be a bit stronger without them. all in all good work