Open xcs software and import xcs or svg file. Check the setting to make sure that they work with you laser machine. I like to do a faster cut on acrylic and two passes with air assist for a cleaner cut so it does not melt. Size can be changed to bigger of smaller. Lay acrylic on honeycomb and adjust laser accordingly. If you want a back plate then create an offset, (Picture Provided) and cut that as well with the material of you choice.

Cut the file. I like to keep the backing paper on till after cutting. Pull of backing paper and mount. If you cut a backing plate then glue it to the back of the acrylic.