How to I slide into my crushes dms from primary school (elementary)?

[JFelix]

I had a crush on this girl in primary school (elementary) but we both changed to different schools so I never got to make a move. I'm am now 16 and saw one of my old friends shout her out for her birthday, I haven't talked to her in years but want to ask her out. How do I dm her on insta. What are some conversation starters.

[Anonymous]

The way one of my old classmates slid into my dms years ago was just "hey remember me?" It was a very easy conversation starter. However that might only work if you haven't seen each other for really long time (it was about 7 years for me).

[JFelix]

I was thinking of doing that yes but what do I say after. If she says yes then what do I say