Sketch paper of any decent quality is very difficult to see through and use for tracing. I'm living proof anyone can draw. Proportionate Sketching of Interior Features. Proportionate Sketching of Outlined Shape. Then you need only lay the ruler onto your sketch paper and transfer the marks.
Below is what I wish I had been taught.
If your reference is of a naked girl, trim away the background. However, the illusion ends when viewing the actual artwork in person. Proportionate Sketching of Interior Features. Most of my drawings of a single pet or person are accomplished in anywhere from 3. If you position your photo exactly where you want your drawing to appear on the sketch paper, merely slide the photo out from underneath the ruler, which is exactly where you need it to be. It is a Three Step Process. This is what you have to do if you want to.