If your happening to make a map you must know what game mode the map should be and the idea
second don't make a map in like ten seconds that it ends up to be a waste of time
third my recommendation to a good map is have doors that open on E not opens on touch it reduces the chances of you getting stuck in that door
fourth make sure you don't have any gaps in the map like you can see the outside of the map
fifth ADD LIGHTING if you don't add light just to save time thinking it will light automatically that will only prevent download to the players
sixth if you want to add custom models or models from other player's cough YELLOW KILLER cough you MUST USE PAK RAT so the players can download it and not have a big error and make sure you ask the permission of the person who made the model DON'T BE A FAGGOT AND STEAL SOMEONE'S IDEA WITHOUT PERMISSON
And Finally you want to review your map for no flaws and if I missed something please put in the comment section below
if you followed these step the outcomes of your map should be success full NOTE THIS IS NOT A GUIDE ON HOW TO GET YOUR MAP ON THIS SERVER THANKS FOR READING