Also, about their faces, I agree. Tennant's face is somehow never the same way twice. I have to use a reference 'cause it's like the whole shape changes depending on his expression. With Smith, it's more of "Did I give him enough chin? Surely that's enough chin." *checks reference photo* "HOW MUCH CHIN DOES THIS MAN HAVE?"
Wow this is so good ! They really look like in reality. I like your painting style too! And I agree with you, I'm painting a portrait of Ten and it's really hard xD The only thing I can say is that I think your painting could have been improved by the background