1) Don't pick locks you rely on. Since that lock is mounted, I presume it is "in use". Ask yourself this question: "If I bugger up this lock, how screwed am I?". If you're not reeeaaaallly comfortable with your answer to that, don't pick it.
2) Go to the top of the PickFu section of this site and look for the sticky called Beginner Lockpicking Exercise. This will help you learn to feel the pins.
Are you a girl?.. not being an ass.. but the cutesy smiley on the title and the hehe's make me think so.. lol my little sister does that, but to be honest if your not using it just turn it upside down so the pins are up and crank it in a vise, i can rake to!!! yup any leaves come my way i can rakeup. call me a pro
Lol just giving you a rough time buddy all in fun , second language huh? well you got me my great aunt tried to teach me italian and the only words i learned i can't say on here oo i learned how to say pig to.. so i could insult a police officer in italian but... i wont try