Oil from the tube on fine grain paper, basic repeat.
[Currently set @ Fabric and Giftwrap: 337 ppi (optimised for 42" wide fabrics; usually 300 ppi, 10.5" x 13.5"); Wallpaper: 262 ppi, ~12" x 15.5"]
Wallpaper Coverage Calculator
Based on the dimensions you provide, this calculator will determine the number of custom-length sections of paper you'll need to cover any surface. If the height of your surface varies, input the tallest dimension in order for the pattern to line up correctly.
Enter your dimensions in feet (1 foot is 30.48 cm).