Hi
@Magichuusom! Indeed, DIY is always the best way to go! This guy spent years working on DIY roof for his vegetables, you'll find hundreds of useful informations: https://sjefgardentips.wordpress.com/2011/07/15/7-roof-over-sweet-peppers-or-tomatoes/. Here's another source describing precisely the building materials & process: https://steemit.com/todo/
@fmgearner25/todo-build-your-own-tomato-roof-over-your-tomatos. Hope this will help, happy growing 👊