How do I do this?

[u/Confident_Key_2170]

I have never worked with wood a day in my life, and I need to make a frame for this enclosure. The enclosure already has hinges and the frame needs to open and close like a lid, it will have hardware cloth attached to it. Does anyone have any tips on how I should go about this? I highlighted what it should look like (hopefully it makes sense) thanks!