First pose - pencil. The scanned image was too pale so I adjusted the contrast to make it pop more. Cute sketch, but does not look like the model at all.
Second pose - I tried using the proportional divider to measure the features.
Third pose:
This is the only sketch that has some resemblance with the model.
At the end of the session, the model chose one sketch from each participant. In my case, she chose the second sketch...who knows why that one ?!