Add storage and seating, with a custom fit built in banquette bench with flip up storage. Can be made as a corner bench, breakfast nook bench, or window seat.

This detailed plan walks you through the steps with diagrams, videos tutorial, and material lists.  Free plans by Ana-White.com

This is the easiest shiplap fireplace tutorial!  For about $550 you can build your own shiplap fireplace bump out (tv and insert not included).  Step by step instructions with video and shopping and cut lists from Ana-White.com