Making the most of a small kit greenhouse in Colorado

I have an ongoing YouTube channel that follows the creation of a 4 panel polycarbonate greenhouse in Colorado at 6200 ft. To save time and effort (plus make it look nicer than my old plastic tunnel greenhouses) I bought a kit from backyard discovery and documented the enhancements that got it to holding an average of 22 degrees above freezing this last winter/spring.  At only 12 x7, this seems to be a good achievement for such a small greenhouse. Check it out at https://youtube.com/@threeminutegreenhouse?si=Cp2a0uC_QITi53Q- and let me know what other improvements I can try.  A bigger greenhouse is on the list but need more unshaded area to work with. The episodes try to stay around 3 minutes so a quick watch.[youtube]https://youtube.com/@threeminutegreenhouse?si=Cp2a0uC_QITi53Q-[/youtube]