1. always pull belly button towards floor (keep it tight the whole time)
2. dont be in a hurry
3. PLANKS PLANKS PLANKS (this works your whole core which includes your back)...keep your belly button pulled in for them too and try and hold as long as you can...IMMA TRY and show diff variation of planks on my blog this week http://aliciabellelite.blogspot.com
4. When doing whatever variation of a regular crunch always keep neck in line and focus on a point on the ceiling. This will help you keep your focus on your core to do the sit up and not use other muscles to help you!
5. Cardio...did I say Cardio? lol