I understand what you mean by losing focus, as it happens to me when I'm writing: "Woohoo I have a great story idea with several plot points and I know what everyone's gonna say and I could probably act the story out on my own if I had to and... and... well gee, I don't really feel like sitting down and typing this right now. I wonder what's on YouTube. *click*".
As for dA (linkshill: http://www.deviantart.com/ ) it's a pretty good community, catering to everyone from fantastic graphic artists to kids who scribble in their notebooks when they're bored. If you ever get the time it's worth investigating, because from that sketch it's pretty clear you've got talent that deserves to be developed.