single guys how do you not come across as a creep in dms

genuine self improvement question, im aware that single guys have a reputation and i don't want to be part of the problem but i also don't know what specifically reads as creepy vs normal when im messaging couples. like, is "you're gorgeous" a creep opener or a nice compliment, is asking what they're into in message 1 too forward, is sending a clothed photo of myself uninvited weird, is replying within 2 minutes of their message clingy. couples on here please be honest about what specifically tips you from "interested" to "block", id rather know now and adjust