..Confusion...???

Really confused at the moment about where to next take my project. I am showing the lecturers the designs i want to do and every time i show them they keep pushing them back. Saying their not sophisticated or to 'Cheryl Cole like'... and I'm really confused, Do i make what they want me to make?? Or am i making what i want? I'm also really confused as i do marketing as part of my degree. But i don't believe its been explained to the marketing students how to take this side of the degree forward. Its been to general. I feel like a 2 minutes conversation on the subject isn't helping me. And it doesn't help when you have to wait around all day as there is only 2 teachers to speak to about it. I just want to do well soooo bad and i want to get the best possible degree. So i can get the job iv always wanted, and start my 'life plan' for a better life. I'm getting very overwhelmed by it all. I have put so many hours and hours into and my grade of a D2 i received on Tuesday doesn't reflect this. When i know some of my piers have put in little effort and are achievement the same or higher grades. It makes you feel like the grades you want are impossible!!???