I want to ask my crush out for coffee ☕️

There's a guy that I have a crush on and I'm thinking about asking him out to get coffee 💕 He goes to the same University as me. I'm a musical theatre major and he's a lighting design major. Because we're both arts majors I see him around the department sometimes but whenever we do run into each other it's unexpected. I met him when I was helping put up lights for a show at our school. We don't have any classes together so if I run into him it's not really when I have time to talk to him. For the record, I am 20 and he's 25. Any advice or words of encouragement to help me figure out how to ask him out?