It's worth noting that you can use something flat, like a paint stick, to keep your spacing between boards even. I have to admit, though, I used my eyeballs! Also, If you don't already have a nail gun, it is definitely worth your money for a project like this. Either that or borrow one from your friendly neighbor!
Now, here is a REALLY funny sidenote about this project. Please, if you have a pocket door, you have to read this as a warning. Hubs and I worked and worked for a good part of the day. He needed to use the little boys room (it's right behind that door in the picture to the left). He went to pull the door shut and says, "Uuumm, honey, we've got a problem". Now, I have to say, when we do projects, it is typically a comedy of errors, but I don't think we've ever had an epic fail like this. Are you sitting down? Yep, folks, we nailed the pocket door in to the wall. At the time, I was so mad at myself, but after a few minutes, I started laughing and to this day am still cracking up about it. So listen up, if you are nailing a wall that has a pocket door in it, USE SHORT NAILS! Seems obvious. but clearly it was not the case for us!
Our home has rounded corners, rather than 90 degree corners, so we needed to figure out a way to cap off the end of the wall. We just used a strip of flat molding. We also put a strip at the top, where the planks touch the ceiling. I am considering wrapping the plank wall around in to the dining room, but haven't decided for sure yet. When I do (because let's be honest, I know I'm going to bring it in to the dining room), I will just butt-up another flat strip for the transition.