Good work, really sits together well and I like the colour scheme too.

I like the second one. It looks like it is glowing to me but I am not sure that glowing and reflecting is exclusive, I thought they could appear together.

I really love that plant in the middle,...

Great idea!

You could try mapping a real tree texture onto your trunk; I have been using some photo textures painted over / altered a bit from the standard in photoshop, placed onto a UV map and...