Ohhhhh, it said twice the size? Oh my gosh, for some silly reason I remembered it saying half the size of your RAM. Gosh, I am an idiot. See, I told you, I aint the forgone expert on partitioning, that rank goes to Harvey.
If its supposed to be twice the size of your RAM, then you did it right. Your just gonna have to have @337harvey help you with whatever questions you have.