I'm new to this game. I'm stuck on a mission. It's the Skill Challenge - Manual area. On the ground, there is a green triangle that says Manual on it. What does this mean? Above it, there is a yellow circle with a can or bottle in it. The skater won't hitting the can. What do I have to do? Any help would be appreciated.

The manual green triangle means you start manualing on it and continue to the orange triangle, then the blue triangle, then finally the yellow triangle, if you can:|. And you are also not suppose to hit the can of paint. You are suppose to manual or do any other stunt on or through it.