Firstly, effective communication is vital for every Gay Sub. Clearly state your desires and boundaries to your Dom. And never feel pressured into anything.
Secondly, a Gay Sub must choose a Safe Word. Agree upon it with your partner. And don't hesitate to use it whenever you feel your limits are being crossed.
Thirdly, understand that a Gay Sub is actually in control. You have the power to create your own menu of BDSM delights. And your Dom’s role is to select from this. And surprise you. But to be sensitive to your needs at all times.