I really like the trees, though I wish you had put them in [imgzoom] tags instead. The trees remind me of the semi-functional ports I've seen of GBA Pokémon trees to resemble the ones used in Gold, Silver, and Crystal. I suggest maybe using the [rpgmaker] tag to show the license. For VX Ace, it would be like so:
[rpgmaker]VX Ace[/rpgmaker]