Hey Zhen Yi, don't look down on yourself.. if U have will, you will have a skill guaranteed!:)
You are still young, so if U start now, I can't imagine where you'll be in 10yrs!;)
I am doing 2D&3D for 7 years, and to tell you the truth I feel retarded comparing to my profession community:)
Start small, do some static as you planned, few crates here, ladders there, things like that.
If U need any help, I would be glad to provide it!
Cheers