You see really well in color. You should do more of it. This is quite excellent. Only bug to pick with this is the entire tree is not sharp- I like the background going soft, but the whole tree should be in sharp focus, since it is your main subject. You're losing a little bit of the branches closest in the lower foreground, and the upper branches from the mid-ground back.
This is very nice, lovely detail of the wood, but I am seeing more than I need to. You may be shooting more of the tree than you need to. If you crop the top 1/4 and the left 1/6th of your photo, you get a stronger photo. Thanks.