Good rules of thumb for success on NG:
1. Offer a full game, not a demo or an underdeveloped project.
2. Make it worthwhile and not time-wasting. For example, text should never appear letter by letter when it is lines of text, but can appear with transitions like fading in, et al.
3. If the art is just photos, we know you didn't try.
4. Consider a mute button, always.
5. Additional to note with text is the influence on "tutorials" if your game needs that much of a tutorial for a short point and click game, then you are doing something wrong. Most point & click games need one page to clarify any aspects of the interface that aren't immediately obvious. It's generally an intuitive thing for anyone who uses a point and click interface.