OMGWOW, THIS COMMENT :OOO Surely I can't deserve all this but THANK YOU SO MUCH KIM YOU ARE AAAAWESOME.
And asdasdfadasdas I'm so glad you keep saying that I keep growing as a maker cause I always stress that at some point I'll just disappoint everyone and they'll be like 'hmm used to be decent but has produced mere crap recently', lol. So I'm just glad that this set doesn't seem to be that point yet. But maybe you're right and all makers are their own worst critics :p

The dusty rose coloring gives it a somewhat haunting quality, IMO, as if she's someone who got lost in time and space. Don't know if that's the case since I've never gotten through an ep of the show, but I love the feeling that icon imparts!
Omg I'm squeeing a bit at this because that description really REALLY fits Rose (the character in the icon).

16 is super vibrant in the background and yet the subject has a deep but muted coloring. I really enjoy that juxtaposition. My one quibble would be that it seems as if she should be scaled down a tad to allow the space to flow around her sides/shoulders more. I think my neg space bias may just be showing though.
Ooh thank you!! Also for the concrity part, I think you might be onto something there! Who doesn't love negative space :D here's a more negative spacey version:

It reminds me of Harry Potter though I can't totally say why. The dark blue and the majestic bordering scream "WIZARD PORTRAIT" to me. Weird, I know.
Omg, I LOVE this association. Especially because if it is a wizard portrait, it's one of Barty Crouch Jr (who was also played by Tennant!).

Yay, thank you so much for all the detailed comments and the encouragement to keep experimenting, I most definitely will!! :D