Yes, use this name

"Marcy?" the man says, raising an eyebrow. You get the feeling he isn't convinced.

"I like it", Honey says, immediately supportive of your decision. "It's cute, and gives off a sense of innocence".

"It could work", the pony-tailed man resigns, perhaps knowing better than to argue with two women.

"Marcy Snow", you say, now having made up your mind. You're still not entirely sure if it has the zing required for the industry, but you just like the sound of it. Using your real name might not be a good idea, your realize. Your everyday life will probably be a lot easier with an alias, especially if you turn out to become popular. It will be the name 'Marcy Snow' that will henceforth associated with the act of porn, and might cause people that have seen your movies to subconsciously conjure up images of sexual activities.

The director smacks his hands together, apparently resigning himself to agree with your choice. "Perfect", he exclaims. "Let's go with that. Now, are you ready to get started?"