"I was going to add be aware of things in the picture. Here is another pic I would never submit. why? look closely..."
I see your point, and celebrate the spirit of submitting only what you consider the best possible pictures. However, heater or not showing, the picture you would never submit is still excellent and worthy of being submitted, and worthy of winning as well if it proves to be the most voted on that particular month. Could it be better? yes, but it is quite good nonetheless.
Alternatively, one can take the very strict approach of submitting only the very best for such events (nothing wrong with that), thus elevating the overall quality of the site's competition, but still posting (thus sharing) other pictures in regular posts. Otherwise one would not be contributing to regular and inspiring posts, and depriving the readership of good images that they will enjoy no matter what.