First of all take a better PS.
Then let's go criticize u xD
Before criticize u i have to tell that for a beginner that's really good.
And now critics xD
Render position its pretty bad you can enlarge it, blur also its to much you should make the picture more darken and also to much blur on the gun side.
I understand you wanna make it looks like he shoot but... to much :P
My opinion text should be somewhere on the gun with an enlarged render...
Anyway more infos i can provide u on skype...
Overall a pretty good tag for your level.
With love ST aka IW :P !