The thing about your HSOWA fic is that it was just a spur of the moment thing. It's easy to let yourself get down about things like that but you should try and avoid it. I had a fic that I didn't really put enough effort into called Gold & Silver's Big Adventure/I'm With Stupid and it got a disappointing response. Anyway, my point is, you have to keep trying, if you have an idea that you really think could work - do it. I think A Girl and Her Journey had massive potential, so just take what you learnt from that and I'm sure whatever you do next will be a hit!