This design started life as a 15" x 12" ArtRage original in oil straight from the tube on fine-grained paper. Half drop repeat.
[Currently set @ Fabric & Gift wrap: 300 ppi (10.5" x 13.5" repeat), Wallpaper: 262 pp (~12" x 15.5" repeat)]
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).