What happens next?

How to paint a wall chair rail 
Purchase the paint you will use to paint the chair rail. 
You will need to decide what color paint you want to purchase and what type of paint to purchase. It is usually best to use semi-gloss paint.

Possible answers:
1). Wet paint will stain the wood without drying. Test the paint to see if it is touching the wood.
2). Outline the wall to enhance the color of the piece. Follow the outline outline of the wall from which you plan to paint the chair rail.
3). Clean up any old paint that has escaped from the can. Clean it up well with a wet rag and then wipe down any surface painting with a cloth or paper towel to remove particles.
4). Most people use the same paint for chair rails that is used around window and door trim. The paint store can help you with how much paint you should buy.
4).