Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make chalkboard paint [title] Choose a flat, smooth surface to turn into a chalkboard. [step] Flat objects, such as wooden plaques, work the best. You can also paint curved surfaces, such as terra cotta flower pots.

Ending1: These are easier to work with, too. [title] Buy a medium to large-sized surface. Ending2: These embellish and create a unique texture. [substeps] Round, oval-shaped papers are the best, as they're easier to paint than smaller papers. Ending3: [title] Apply a layer of paint to a primer. [step] If you have electric or oil-based paint on hand, you can skip this step. Ending4: If you want to make a magnetic chalkboard, try a sheet of galvanized steel, but make sure that it is magnetic first. Avoid surfaces with lots of carved details, as they will be difficult to write on later.

Answer format: ending1/ending2/ending3/ending4