The ear is definitely the thing that stands out the most. As the others mentioned, too narrow, too low and far back on the head, ear butt not big enough and no skull built up in the back.
If you study reference, you'll see the ear sits tight up against the antler in a forward postion.
Your eye shape looks close...way better than my first.
You'll hear it over and over, and for good reason, studying reference is the only way to get a mount to look really good. Get a deer calendar, deer pictures, look at magazines and books...any picture of a LIVE deer you can find...study it...note how things line up. You'll see that most deer are actually slightly different, there is no cookie cutter deer...but there are definitely common traits.
Keep at it...you'll get better with each mount.
