Build and Shoot

So I've been taking a graphic design class for the past 2 months, and it really goes in depth on every tool available in adobe Photoshop. My most previous assignment was too combine 2 images together and make them appear natural. For those of you who know about photoshop, this is a very vigorous task. Tommorow i will post the orignal imgaes because i lost the files :(. All i ask from any of you is to give me some constructive feedback. Thank you.
Edit: found the image of the original deer

There's a tiny glow around the antlers- can you burn them a bit?