Cabin scene

Hey guys, I used to be on these forums a lot years back. I used to make optimized builds in 2006, but I have since done many other things and I now use Linux. I am making a scene of a mountain cabin. Below is the photo and early stages of my development. My question is this: how can I get the back lighting correct to make the wood glossier? Thanks!

http://i781.photobucket.com/albums/yy93/radial_2/mountain_home_stage1_zpsf17c9658.png

http://i781.photobucket.com/albums/yy93/radial_2/tumblr_mvc0mrbHeW1qzwmsso2_1280_zpsedce70a4.jpg