Please choose the correct ending to complete the given sentence: Home,Categories: [header] How to make a chalkboard [title] Choose a picture frame based on your desired chalkboard size. [step] You can repurpose an old frame, pick something up at a second-hand shop, or buy something new for this project. The size of the frame will be the finished size of your chalkboard.

Ending1: [substeps] You should be able to decorate both sides with paint colors that match the chalkboard design. [title] Choose several colored chalkboard colors to identify your chalkboard. Ending2: [substeps] When selecting a frame, choose one that still has its backing. The backing isn't necessary, but it will help you secure the chalkboard later. Ending3: [substeps] You can paint your frame black and put a black permanent marker into it to serve as the outline. The back of the frame will be the background for your chalkboard picture. Ending4: [title] Put a sheet of butcher paper on the desktop or work surface. [step] Place another sheet of butcher paper on the back of your chalkboard.

Answer format: ending1/ending2/ending3/ending4