I will be using in "A side scroller II " .

Good for a background, if you can synch up with the bottom of those trees to some grass tiles.
Good for a side scroller.

Personally, I have no complaints about repetitiveness. It is two tiles wide, and responds very well to horizontal flipping, so if you mix it up, you'll have four possible vertical graphics to choose from (I actually gave it a try and liked what I saw). It'd work best in a sidescroller, but I can imagine other instances in which this would be useful if you were creative.

My big complaint is that these use 16 colors AND a custom palette. That's a lot to have to dedicate to a level palette just for six tiles worth of tree background. Also, the fact that they use 16 colors, and not 15, is very non-1.92-friendly...this could have been easily avoided during resizing.

These are very pretty, but as they are a rip, I regret that I can't give more than 3 stars for reasons of impracticality.

They're good stylistically, but they'll only work in a sidescroller environment. Also, you should make it longer, because this version is super repetitive.