Are there any DIY plans on here for making a weather shield for my UQ's ?

I've got a large piece of Pertex 4 which should work well, is it just a case of laying out my UQ and making the shield a few inches bigger all round, and adding some end channels with some shock cord through ?

I can only borrow the thread injector for a couple of days at the weekend so need to get it right first time really.

Any tips ?