I usually like to share thrifty decorating solutions. This was one occasion when we decided we'd rather spend a little money and save a lot of time and effort. The product I used for my wood plank wall is v groove wood planks by EverTrue, sold in packs of 6 eight foot long planks.
How to Install Wood Plank Walls | Beneath My Heart... Great idea to avoid uneven ceiling! Put in a ledge for pictures to sit! ...doin it!
How to install a wood plank wall... Paint a couple coats before putting up so you do t have to do 4 coats on wall