DIY Custom Picture Frames

Step 13 Paint or Stain the Frame

It is very difficult to create perfect miter corners. If your corners have gaps, you can use some wood filler to fill the gaps. Let the wood filler dry and sand the frame. Finally finish as desired. In my case, I apply two coats of primer and two coats of glossy black enamel. You do not need to finish the back of the frame if you don't want to.