This is another channel I follow regularly, although my favourite is the Brits, these guys posted an excellent video on terrain and how they go through setting up the best table possible to play on that creates a fair and exciting match.
Here's the link. It's a great video and I'm posting it here for my GK bro's who really need help protecting their troops and getting the best possible fair game of 40k in! This has helped me and my gaming group greatly and creates a fairer matchup and fun for both people.
As always, take it with a grain of salt and do what you want, but it's well worth checking out.