Well they're good starts. If you'd like some constructive feedback, I'd suggest cropping closer in to the moon on the first one, because there is alot of dead black space at the edges. If we could get a closer more full-framed shot of the moon and that nice creepy branch, it would make the shot stronger.
The second shot is nice and clear, but I think it would benefit from having a definite subject. The tree you're shooting is engulfed by all the trees around it and it doesn't stick out very much. Maybe if you could find a tree that isn't so closely surrounded, then this kind of shot would also be stronger.
Keep it up!
The only difference between a master photographer and a newbie is 10,000 mistakes. So get out there and make those mistakes; that's the slow path to improvement.