Step 1: make the photo
Create your photo with the right size tool, for example the UK or US maker.
Step 2: build a sheet
Open the print sheet maker, choose your photo size and download the 6 × 4 inch sheet with several copies.
Step 3: print at 100 percent
At home, use photo paper and choose "actual size" or 100 percent, never "fit to page". At a shop, ask for a 4 × 6 inch print.
Step 4: cut
Cut along the light grey lines with a paper cutter for straight edges. Leave the outline off the photo itself if the office asks for none.
Common problems
Photos printed too small (scale was not 100 percent), colours that differ from the screen, and white borders added by the printer.