yes, it is not a bad idea. if you share your gigs on social media you only get clicks on your gig. it does not give you orders. but maybe it happens.
Pinterest is good platform.
Not a good idea. That might cause you to share contact information (Google Drive is operated on accounts that uses Gmail or Google Workspace accounts). so, be careful
your title, description, and tags should be SEO-friendly. make gig image attractive. compare your gig with competitors. share your gig on social media like Pinterest.
Make your profile attractive. write SEO-friendly titles, descriptions, and tags. your gigs thumbnail should be attractive. compare your gigs with your competitors.
build a strong portfolio to showcase your work.