[Warren]

Lets see..Buy the trim, you will need to cut the trim at a 45 degree angle at the corners so you will need a small miter box (you can get a small hobby miter box with a small razor saw at either home depot or a hobby shop for cheap), the you can measure and mark the trim on the inside of the miter and cut it with a miter saw for the 2 corners and a straight cut on the 2 ends, you might need some real fine sandpaper and steel wool to make the trim smooth then you will need to use some toner and then clear laquer after you color it. You will need some small finish nails and some wood glue. Put some glue on the inside of the trim and nail it in place with the small finish nails, I guess you might need a small hammer also if you dont have one.

supplies needed....

1. Trim
2. Miter box with saw.
3.#400 to 600 sandpaper and 0000 steel wool
4. wood glue
5. finish nails
6. small hammer
7. wood putty or grain filler to fill in the nail holes

I dont think I missed anything, this should get you there.