State your intentions clearly, in a joking way (must be funny)
Understand she is not your only option.
Don't try too hard.
If she responds, she likes you. If she doesn't, she doesn't.
Remember that any kind of interaction is engagement. If she insults you or talks shit, do it right back (it's a game)
Don't be too cheesy.
Don't use emojis.
If you talk too much about what she's into, or random stuff, you're placing yourself as a friend.
If you talk too much about *fun* stuff, you're placing yourself as a creep.
State intentions in a joking way, hope for good response, ask her out.
#1 rule: Entertain yourself, say things that make you laugh.