I can understand the need to professionalize your career, and your art is certainly worthy of that title, but I do wonder if it's more than that...? I suppose it's a part of growing up, but looking back on your first works it does give a great perspective to how far you have come along. I don't see anything to be ashamed of in there. But in this interconnected age, I suppose one can't be too careful if you are seeking a good first impression.
I watch you on tumblr and visit regularly, though the layout is still frustrating for me to deal with for long periods. I guess I'm getting old. I think I got you on facebook as well. I wish you the best of luck and success, your work is so expressive and adorable, it's only a matter of time before you hit the big time. I hope you won't forget your roots though, this website fostered some amazing talent despite the huge volume of submissions over the years. It's always a bit sad seeing my artist friends move on, but I know you got a good head on your shoulders, you'll be alright. Just be sure to pitch those HA sketches to the bigwigs you meet! That stuffs golden!