Sure - most folks end up doing it a lot when they graduate to materials 1/2" and taller. Just stack up enough scrap or something on the bottom of the 'forge that leaves your material within a 1/2" of the lens. The stock crumb tray stands about 1.4" above the floor - so that’s the “0” height of the bed and the 1/2" height is measured from there.
Just do a search here - lots of posts on cutting taller material or things over 1/2" in height that explain the whole process way better than I am.
If you feel really nervous, you can put that construction paper on the bottom of the 'forge so it covers the shiny aluminum sheet to prevent reflections.