It takes sometime round about 24 hours and your impressions will be shown. Moreover, you should use best keywords to increase your impression and clicks
I think you can,t get much more impressions and clicks on your gig. Fiverr gives oppurtunities to new seller and i think you might be working for a long time and you have not boosted your gig so that's the reason your gig is not in search
Yes picture has a great impact on your profile and gig. Your profile picture and gig is the presentation that how professional you are. Therefore, Picture must be professional.
You should have to work on 7 days formula. Make a gig and active it for a week. See if the impression and clicks are not increasing day after day then you need to add a new gig. Also make sure that your portfolio is also there.