Lots of examples and some good advice in this thread. There's a few different topology layouts that can work well for this kind of shape and a lot of different ways to approach the modeling part of the process. If the project requires subdivision modeling and the goal is to have sharp corners, while also using the minimum…
"What you shared about using existing geometry as support edges, isn't that the exact thing that I did with my edges in the screenshot I sent?" No, not explicitly in terms of the example I'd linked. "It definitely works but only to a certain extent." Actually it doesn't and for my particular hard surface specialty I…