The picture above is from his current room. The green wall is Glidden BHG In The Garden and the other wall is Glidden BHG Glistening Sand. This was a line carried through WalMart that is now discontinued, but can still be mixed upon request. The tree trunk is a mix of BHG Tierra Brown and Benjamin Moore Hasbrouck Brown. The BM color was also used to paint his dresser. I painted the trunk pretty even on the bottom and let it taper up to a point, just like a real pine tree would.
Once the trunk was dry I used BHG Loose Leaf for branches. I used a one inch brush, painting from in the trunk outward in sweeping strokes. You can see I left gaps between the branches.
Next, I used some leftover In The Garden paint to fill in the gaps. I then painted back over the In The Garden branches with the Loose Leaf paint. I did this while the paint was still wet.