My wife wanted a fireplace in our living room, but since I didn't want to spend the money to have a real fireplace installed we decided I could build her one with an electric fireplace, an old table and some extra wood I already had.
Step 1: Start with an old wooden table
I used an old wooden dining room table. I liked the design of the legs and it gave enough room for pictures and decorations on top.
I cut it down using my circular saw to 15" deep. (All measurements should be made to fit how you might want it though. Your electric fireplace may be different than mine so shelves should be made to fit.)
After it was cut to size, I then spray painted it black.