[Hondaracer]

Water proofing is pretty straight forward, you can probably read an article or two and watch a YouTube video and get it right.

Thing with those panels is you have to stay on top of caulking any seams, expansion and contraction can open up any caulking and even a little water can cause mildew and mold issues.

Have you looked much into those pre-made entire enclosures? Might only eliminate one more step but could be worth it.