Hi there everyone, i have bought some caravan windows to use as roof windows for my van & i really really need help in how i make a frame for them so i can get a move on with my conversion... i will try my best to include a photo of the windows so you can see exactly what i have to work with... :)

All i know is that i have to make some sort of frame for them... but i just dont know exactly how to do it

I need either a step by step guide or some kind of video? but i cant find either... :(

Please help :) Thanks in advance....