The simple answer is: Without the right tools, whether professional or homemade, you can't pick a lock. Even with the proper tools, some locks cannot be picked. Now the cheaper locks you buy for your house have mushroom shaped pins that defy picking. Auto locks with double sided keys are another example of futility in picking, because both sets of pins must be aligned. There are many easier ways and some require breaking something. Better to ask: Would it be cheaper to break this, or call a locksmith?