I think it's always difficult no matter how similar your characters are to yourself to get into that mindset, because however much they are similar to you, they're not you.
Asa ButterfieldTV and film both attract me equally. In both, you do search for a role that would be enjoyable to do, that has a great storyline and then, secondly, you look at the cast and the crew - are they respectable? How I look at it is my character - has the character got enough substance? It can't just be a one faced character, which is there to fill a gap. He has to have a purpose, so if it ticks all of those boxes then generally it's a good choice.
Asa Butterfield