I want my bedroom walls to look resembling the inside of a barn (wooden planks)?

I want my bedroom to look as much as a barn as I can.
Thanks

Answers: Moisten some cow pies and throw them against the wall!!

Just kidding:
Go to Home Depot and catch some of that wooden cedar siding and attach it to the walls. Would look great and cedar has a amazingly nice wood aroma.
I love your creativity. Should be a fun room!!

rough sawn fence pickets...apply to sheetrock