The idea when submitting to microstocks is to make money, so your goal should be to formulate a plan that maximizes your prospects of success. What is in that plan will depend upon the kind of person you are and how much time you want to spend on stock photography.
So far, we have covered quite a lot of ground. It is a good time to take stock (no pun intended), to think about what we have learned, and to add in to the mix a few tips that I think will enhance your prospects of making money from microstock photography. Some tips work better for one type of photographer than another, but let's start with a tip that I think applies generally to everyone.