I think if you are going to post a demo, if you could maybe go into some detail on things you'd like the reviewer to look out for (eg in situation x I feel I did the wrong thing etc etc). I think it makes it easier to highlight specific problems that YOU feel you are having. Obviously it's good if the reviewer finds these things themselves, but when I'm given demo's I usually ask people to highlight a few key moments, despite the fact I will review the full demo.
Simple things like "my positioning is eeeH" aren't really helpful.