You did a really good job on this considering you havent had alot of experience with Photoshop.
Here is a few tips though:
You should present the cover in a 3D presentation, It makes it look more alive!
It doesnt make sense having the doctor on the front. The front should always represent/show what the game is about. Having Vaas or jason with maybe the island in the back of them and some action scene or something would fit and let the person looking at the cover, get a feel of what the game is about.
The Farcry 3 Logo on the front is a bit off. It should be centered.
Having a shadow behind the Doctor is not needed.
Altought i know that you wanted him blurry because of the shrooms in the game, its also not needed and looks wuite odd.
You should add a Ubisoft logo at the bottom right on the front.
The shadow behind the Farcry 3 logo on the spine is also not needed, because the logo is white. Same goes for the Ubi logo.
It looks a bit empty where all the legal info are on the back. You could add some logos to fill it out or simply re arrange the infos and logos. It looks somewhat scattered all over the place.
The back is also too text heavy. Theres isnt any plot on the back.
The red highlighted words on the back is in Caps wich is good but the rest of the text wich is white could look better un capped?
The back is somewhat plain and could use some renders or something.
All in all, its pretty good but theres alot to improve. I do love them colors though. Hope i could help a little bit.
Good job man and good luck.
