After locating a blank page for the map, I secured the graphite paper (graphite side down) to the page. I taped the small map that I found online on top of the graphite paper. I used washi tape for both layers. Using a color pencil I traced the borders displayed on the map.
When finished tracing, I carefully peeled off the graphite paper. I traced over the graphic lines with a Sharpie Pen and then erase all of the graphite lines and marks from the page (graphite can be messy).
I realized during the inking process that I forgot to trace Tonle Sap Lake in the center of Cambodia and the river that flows in from Laos. I made a couple of measurements with a ruler and drew the lake free-hand.