For what it is the image is well done. Very clear and well colored. My issue would be that it seems a lot more cartoonish then it needed to be in the end. I think between the very bright colors and the facial expressions, not to mention the "bikini" of leaves, this image comes off almost as a whimsical take on a dryad...a Saturday Morning Cartoon version perhaps. Still, if that works within what you need, then the image is of good talent and skill, I just would have liked to have seen a more serious look at the dryad.

Here is an interesting take on a dryad, rather than a human-appearing female who dwells in and around trees, here we have one who is made of 'tree-stuff' - bark for skin, leaves for hair, branches for limbs. Yet she's no caricature, but an individual in her own right... you can just imagine her stepping into a forest clearing to admonish some luckless traveller who chose the wrong branch to fuel his campfire!