Here is a splendid youtube channel I follow. He goes through a bunch of useful tips for combining 2D and 3D into Blender 2.8 and It’s what I will be using for my own film. have a look and follow him. Also be sure to follow my Youtube for tips in Storyboard Pro.
He went live when building his 2D/3D environment in Blender. I will be using this technique in my film.