Hello,
So I’ve run into a few problems when trying to get my toplogy correct and efficient and would like some advice from the forums, so if anybody’s willing to help me out it would be very helpful.
Firstly, this is part of a model I am working on where I have cut a hole into it, I’ve struggled with getting the topology correct and mainly don’t know where to put supporting edges/lines etc.

This is when I apply a mesh smooth, does this look correct?

And finally, I am trying to cut these 3 rectangle shapes into the mesh but have failed a few times, any advice on how to do this efficiently?

Thanks, your help would be greatly appreciated.