Twinleaf town in the game:
I would make things look a bit more realistic if I made this choice, so I would make the trees not so close to each other and I will make the pond more rounded.
Twinleaf town in the anime series:
I would gather information based on how it looked in the anime like I see here an field devided by fences with spread out houses and tree's, surrounded by a forest border. I will also include the festival area somewhere in Twinleaf town. The missing details I fail to see in the anime will be replaced with the details from the game.