Board and Batten

I love the look of Board and Batten and so I am trying all by myself to put some up on my living room wall.  I am no handyman so It's kinda just sitting there waiting for some help--    hint hubby

Here's how it's going so far.  I hope to post an AFTER picture soon

I also painted a wall in my dining room blue and I'm loving it   so my next decision is whether or not to paint this wall above the board and batten blue too.....I can't decide if it will be too much