The artwork specifications are here.
Side cut formatting options here.
Adobe illustrator is the best option for editing or creating your artwork; however, there are other options if you are not familiar with Illustrator. CANVA® is an alternative to Illustrator. The paid version is required to properly prepare the artwork. The instructions for formatting in CANVA® is here.
We offer design services as well as file formatting services. We can have one of talented and experienced designers create a great looking package for you. You can get more information here.