This looks pretty good, however, I have to ask how much of it is free-hand and how much is CnP. As the trunk looks the same as your oak tree skin.

Assuming the leaves are free-hand they look pretty good in game but I think they could use some more definition as right now they look very spotty. From what I can see it looks like you've drawn a single maple leaf and copy and pasted it multiple times after stretching or resizing it and then re-orienting it to face either up, left, right or down. Whilst this has produced a nice effect it would be better if you free hand all the leaves rather than using CnP.

The leaves are too bright. I'd almost recommend taking the leaves from another one and just recoloring them to a deeper red. Otherwise love the concept and want to see a finished/better version of this!!

You need to improve the shading before this can be approved. Thanks for providing an ingame screenshot, though.