How do i start playing from the level i finished in littlebigplanet game on PS3?

I have this cool game littlebigplanet that i play on my PS3. Being new to PS3 / littlebigplanet, i don't know how to start playing from the level that i already completed before. Every time, when i try to continue from the where i left the game before, it is taking me to the first level which is frustrating. If someone knows how to solve this please let me know. I have the last session of the game saved under game data utitility in PS3.How do i start playing from the level i finished in littlebigplanet game on PS3?You need to save itHow do i start playing from the level i finished in littlebigplanet game on PS3?May be nobody will tell you!