no surprises at all that your sparrow sold, what a charming, personal piece, so wonderful in its simplicity, I think that anyone can relate to it and enjoy it. You've had some wonderful advice here and I can only agree with it, glad to see you back posting and congratulations on the sale - one bit of advice to add, never judge your work by what sells, I'm supposed to be one of those professional artists and all, but still have to do the day job, people may like what they see and say so, but they don't always part with cash. Even if things don't sell, always remain true to what you want to do, and you'll have the partial satisfaction of being as true to yourelf as you can.