How do I squirt??

Anna💮

Okay so, I'm 19 and after many years of masturbating, I've never made myself squirt. When I'm alone I haven't even gotten close to it, but when I'm with my boyfriend and he fingers me I feel like I'm really close to squirting. Things is, I'm always too shy to let it out since, I literally have never done it :/

PLEASE help a girl out and tell me your tips/tutorials on making yourself squirt.