Idea for living room

I can not wait to decorate. Right now we are in the middle of construction with the walls, cabinets and floors being done, but what I am anxious for is the decorating part. I am no interior designer and never had any schooling for it. I try to mimic my sister with the boards, but it does not always work. She will eventually tell what needs to be done here and there. I figure her advice has to be good for something being that she is a floor planner and all. With all do respect...I take any advice my sissy gives me. I want to go for a relaxed, shabby and chic look. What do you think?