look for the the plants that are already weighted down...may get moved around but at least hey aren't floating on top and will help more with the natural look...or put more gravel in the tank and bury the heck out of them lol
Looks pretty good mate, but if you want a more natural look, you should probably get wood that doesn't look like it has been neatly cut with a saw, 8). It looks good except the neatly cut wood looks outta place.