The lines you can make with encaustic paint are really cool. They hover above your painting, encased in clear encaustic wax. The process is this- put a few layers of clear wax where you want to make lines. Then incise your lines using something sharp. I use a clay carving tool. Then, using a brush loaded with the colored wax that you intend for your line, force the wax into the incisions. Once the wax has cooled a little use a scraping tool to scrape off the extra colored wax, and viola, you have your line!