Not that there is any one piece of his that is directly analogous to any one piece of yours, but rather that you and he seem to share a similar visual sensibility in many ways. Just in terms of "feel," this is the one of his that your "girl with flower" brought to mind :thumb157366558: , but he's also done a number of more identity-oriented children's portraits that he's yet to post on DA [link] that also give me a similar vibe in many ways.
well...that's a tall order but I use 2 mechanical pencils. 2B and 4B with a magic rub eraser to smooth the pencil strokes and a small "cut" ersaer to pull up highlights. It's actually a pretty simple process.