One of the things I'm making sure to do is to add a "validated level" condition. What this means is once you test your level and make it the exit while collecting all three stars, you will be given a validated export code to share with your friends. When someone loads this they will know for certain that this level was actually completed in the number of steps listed.
I'm pretty excited as this is the second time I've ever worked on an "editor mode" for a game I've made. Both a feature and a tool!