I’ve painted four nudes now, based on old life sketches and using a collage of hand made papers as the basic structure. I find it very hard to decide if I really like them or not. I study them a lot, so maybe that indicates something.
I adopted a very high tech approach with both of these. I pasted up the paper collage and photographed it. Then photographed the sketch and loaded up both images as layers in Sketchbook Pro on my tablet. Making the life drawing semi -transparent, I could see the collage through it. then I rotated the collage to see which layout seemed to suit the sketch best. Then I painted the image in that orientation.
The technique worked well, and by squaring up a print of the composite, I was able to transfer the drawing far more accurately than I normally can.