1. Get their name right .It's the first thing people notice!
2. Do you research and find an interest or point out something amazing that they've done recently
3. Ask a question in a relaxed tone with phrases such as "out of curiosity"
4. Be human and wish them an amazing day without any links or phrases like get in touch if you're interested.
5. Go and comment on their recent article/post or find something you can assist with them.