Squirting!

So my boyfriend likes the idea of seeing me squirt! I'm his first girlfriend so he's still a novice and being 18 myself I'm still trying to figure out my own buttons. When I'm on my own I do pleasure myself with my dildo. I use this time to get to know my body as it gives me confidance and helps me relax when I try new stuff with my boyfriend. The problem is I don't know the difference between peeing and squiring! I'm convinced I'm peeing and not actually squirting. I do empty my bladder before hand. Does any one have any tips that can help me with this?