An attempt at drawing Adam Scott

If you've been following me on Facebook you've probably noticed how I have a thing for people. I love drawing people, and especially people with interesting faces. Adam Scott is one person whose face I find interesting, and since I've been watching a lot of both Parks and Recreation and Party Down lately, I thought I'd have a go at drawing him. Again. Because I've tried before. Several times. And each time I've failed miserably. Adam Scott has a very defined and easily caricaturable face, and should thus be easy peasy to draw, right? 

Nope. Nuh-uh. I don't know what it is about him, but I never really manage to make him look like himself. This time I felt I was so close to actually catching him on paper, only to realise that I'd made him look like Adam Scott with a hint of Simon Cowell (especially in the photo below) and a pinch of David Tennant (is it the hair?).

 But at the same time he kind of looks like himself. I mean, you can probably tell that it's supposed to be Adam Scott if I tell you that it's supposed to be Adam Scott, right? 

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What do you think? Does it look like Adam Scott to you? Have you ever had a similar experience when trying to draw someone?