You put a laminated pattern next to the tapestry. Protective patterns are remarkably easy to work with. You can copy them without worrying about channeling magic when you look at them, as they only absorb and redirect energy. With a steady hand you squeeze a short whorl of navy blue dye onto the tapestry. A quick swipe with a sponge brush completes the loop before the dye fully strikes. You eye the result, comparing it to the pattern on the paper. Not bad.
You continue adding dye to the tapestry. Some practitioners use multiple colors for a more artistic effect, but you stick with navy blue. That lets you focus on matching the pattern exactly.
It takes you two hours to finish the pattern. When you're done, you step back to assess the results. Even with the inevitable dye spreading, you've matched the pattern exceedingly well. You'll have no trouble using the pattern to protect your lab. It's a great start to your research.
You wrap the tapestry and place it in a vertical fabric steamer, which looks like a steel rocket that's taller than you, to fix the dye. It finishes in plenty of time for you to attend the luncheon.
To the Luncheon!