Well, there is a correct way to hold frame. But the areas in which a dancer is having difficulty varies greatly. No problem is exactly the same and therefore no solution is exactly the same.
However, there were some clearly and easily incorrect directions given (which were addressed in responses).
As always take the advice you get here with a grain of salt. If anything, use it as a way to ask more specific or better questions to your instructor - as anymouse said, the better the question the better the answer.
(Although, why he/she neglected to provide any specific advice to help a new dancer achieve this, I'm not quite sure. He/she seems to often be quite cryptic and vague.)