Dalek Week 2012 Day 3!
Basically, in the picture, it's some sort of gift-giving holiday like Christmas or Valentine's Day, and because Alek is so broke, he has to make a present for Deryn. So using the tricks he learned from being a Clanker, he makes her this little heart-with-wings necklace. And he blindfolds her so she won't see it until it's on her.
I know the picture is all sketchy and stuff, but that's because it's charcoal. Whatevs.