How to subtly get his attention online?

I am not one to want attention from people lol, but I recently realised that if I actually want to be in a relationship, I have to make a move. I made a move by following my crush online, thankfully he immediately followed back.

He’s single, yet I am a bit shy to slide into the DMs, I’ve never done that before so I’m chickening out. What else can I do or post to maybe get him making a move towards me instead? by the way, I’m not one to post sexy photos of myself, so anything other than that would be great😂, thanks!
How to subtly get his attention online?
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