When you come to hand in your practical assessment work, you should submit TWO separate files:
1. A single-page pdf of your finished panel display;
2. The accompanying essay as a Word document, pdf etc., as you would do with any regular essay.
Other than submitting two separate files, follow the usual process for submitting assessed work via Tabula. I would recommend labelling them something like this...
1234567 - AM417 - panel
1234567 - AM417 - essay2
Please ensure that you get BOTH files in on time.