Gradually using Clip Studio Paint
One of the reasons I married another software next to Photoshop. Clip Studio Paint seduced me with it’s perspective ruler.
I’m more than halfway through Ch27 and I used CSP for 95% of the work. It still lacks when it comes to text design and there are some brushes and patterns that I adore in Photoshop, next to the fact that I simply love Photoshop, but I’m falling for CSP hard!
You have to know your basics on perspective of course; placing vanishing point(s), horizontal line and stuff.
It’s fairly cheap too. You can get the pro version for $50 and there are little differences between the PRO and EX versions