Its looking good!! My eye goes directly to the piece of drift wood. I would consider centering it and placing the rocks that are in the corner around it with the longer plants at the back. Thats just my opinion thoughI really do think its looking nice, and I really like the black sand.
I think it looks good too. It can be tough but try to be patient and let it grow a bit. It never looks they way you visioned when all you have is small wee plants.