1. Print out the template below. (The printed box should be 4×6" (100×150 mm), otherwise there are scaling issues during printing).
2. Align the line marked 'Fästets nedre del' with the lower part of the mount.
3. Draw a line where the top of the frame is.
4. Hold the painting at against the wall where you want it, then push the paper behind the painting. Hold it there and put away the painting.
5. Make a mark in the middle of the cross, then drill or screw in that mark.