Now, if you had made this all yourself, I wouldve been like "woah," but the main thing thats pretty in this one (which is that huge red swirly thing) is just a downloaded brush, and I can spot some more over there. The placement of these brushes is nice, so on that you get a nice 8/10, but since I know you didnt make these I'll have to give you a 4/10 (-6 on the fact you didnt make most of this.)
P.S. - Im aware that a lot of people use downloaded brushes, in no way am I discouraging using them, theyre a great tool to learn how to brush with, and I have used them before as well. Im not saying you did anything wrong with using them, this piece looks very nice, but Im just critting on the placement instead of the visual appearance. And by all means, your placement kicks ass. So good job