[I have 18 clicks and over 800 impression on my promoted gig but I donot find any orders from the promotion.]

hi  1800impressions means ur gig description match the algorithm so well(what u serve for are they want) .😄

let's do a count, every 40 clicked in as they saw,  there must be problems by photos:  They don't show your service exactly.(maybe photos told people other things?), or the quality of the photos can not convince your potential customers.

All Above are my advices.

I'm vera, a pet portrait illustrator. Happy to share as new coming here hope it helps!