You’ll have to dive in-depth into it. Impression means how many times your gig appear in search result. As you said your gig impression is good, which means SEO is perfect. Next comes the click. Well, suppose you are a buyer. If you want to hire someone what will you notice first when you have tons of gigs in front of you? Firstly an eye-catching gig image. Then the title and beginning pricing. If these three things are perfect you will get a click for sure. And after that, if your gig description is a perfect buyer will not leave your gig. You will get that order for sure.