Let's discuss discussion, shall we?
Discussion is super important in relationships, any relationships, but especially in kinky relationships. The discussion of limits is possibly the most important discussion you will have with your play partner. If I'm honest, I find discussing limits hard, I don't want to let people down and ruling out certain types of play sometimes feels that way, but it has to be done. Another reason I find it hard is because I'm always a bit worried that I'll miss something! Either something I love will get forgotten or I wont have thought of everything that is a hard limit of mine.
To make things a bit easier for me I'm in the process of making a list that I can refer to when the question comes up. As I think of, or find out about, new types of play they either get put on my hard or soft limits, or it gets left off the list and is acceptable.
Many people advise that your limits list should be inclusive rather than exclusive (I hope I got that the right way around), meaning you list things that you will do and not things you wont, because it's safer that way. I'm not sure either way is better, though I can absolutely see the sense in it being an inclusive list, that way you know what you're getting in to, but my list is exclusive and being built in the hopes I can exclude everything that isn't for me, and it's also helping me learn about new kinks.
I seem to have got sidetracked somewhat by my list, so let's get back to the discussion. It can be awkward, but it needs to be done and done well, so put on your grown up panties and get on with it. Take a deep breath, get out your list (mental or otherwise) and state your kinks, loud and proud. And remember that discussion goes both ways, so listen to the other person's list too. Take notes if you need to, ask questions, make sure you take it all in. As I said before, this is a super important discussion, and you owe it to all involved to make sure it's successful.