We bought our 2008 TM 2720QB in Dec 2020 having sold our small A-Frame. We'd looked for this configuration for several months and were so thrilled when we found it, we didn't notice there were no curtains! This TM forum has been so helpful for all our repairs and upgrades, we hope this will be a good contribution for others who might be like me, NOT A SEWER, but a willing to take on a project simply to solve a problem.
We're in WA state so our TM was stored Dec until April when we started preparing it for camping. This weekend in June was our first run and the photos below show the 'nice' finished product as well as the the reality of how it's used.
Additional note: we replaced the wood over the benches with stronger plywood and carpet so we can use the seats without cushions. The left side is the step into the bed and our dogs can sleep or hang out next to us. It was nappy time when this photo was taken