Hello Ed,
I can only speak for myself but I'm confident that I'm not alone on that:
Being a "good sub" is not so much about having many years of experience but more about the mindset: The will to please, to put your Lady's needs first or in this special case: To entertain the dominant crowd properly
You might not be as sure about some of your likes and dislikes as an experienced sub but in the end it's all about communication. If you are openminded and willing to give your best I don't see why you shouldn't be a worthy participant.
Regarding the language: Sometimes actions speak louder than words – even if I really love using language for erotic purposes. Also a lot of people speak English these days so I wouldn't worry too much. But on the other hand: I'm not the one being casted 
Maybe you should worry a little. Just enough to have this sweet "OMG, am I good enough?!" expression on your face
I can only speak for myself but I'm confident that I'm not alone on that:
Being a "good sub" is not so much about having many years of experience but more about the mindset: The will to please, to put your Lady's needs first or in this special case: To entertain the dominant crowd properly
You might not be as sure about some of your likes and dislikes as an experienced sub but in the end it's all about communication. If you are openminded and willing to give your best I don't see why you shouldn't be a worthy participant.
Regarding the language: Sometimes actions speak louder than words – even if I really love using language for erotic purposes.
Also a lot of people speak English these days so I wouldn't worry too much. But on the other hand: I'm not the one being casted 
Maybe you should worry a little. Just enough to have this sweet "OMG, am I good enough?!" expression on your face 
I think you don't have to worry that I will not embarrassed.. I'm sure the "OMG am I good enough" face will already come as soon as the clothes fall off.. 
