DMs Use basic Markdown code to organize your game page description. Big blocks of text are not appealing. Create your listing at least one week in advance of the game's start if you are looking for players to apply. Players like seeing a complete listing. Your listing needs a description, a picture, and the DM needs an avatar. Players like seeing a high number of hours played. Simply spend time inside your roll20 game setting up the campaign before you list your game. Consider spending money on a paid subscription. It will set you apart from the other DMs. And honestly it's worth it if you plan to DM regularly. Have applicants go through a process. It can be as involved as having players create an elaborate backstory to fit your campaign setting, or it can be as simple as sending an email with one interesting fact about themselves. This gives you the opportunity to see if players are invested in your game and/or if they can follow rules. Players (1) Read the entire listing! Know the requirements before applying. Ask questions. Make sure the game has no "deal-breakers" for you. E.g. If you don't like the gritty realism variant, ask the DM about it (after tip #1). Make your application organized and easy to read. I myself will not consider applicants with terrible grammar. Pick an avatar for your profile. Show some effort. Have integrity. Do not join a group unless you are certain you can make the meetings. Give advanced warning if you are dropping out. If the DM does not reply to your application within two to three days, consider moving on. He/she either did not accept you and wished to avoid drama by explaining why, or the DM in inundated with applications, or maybe they suck and you don't want that person to DM you anyway. All three are good reasons to move on with a smile on your face!