This Blender guide discusses a creative workflow with Grease Pencil in Blender and Photoshop that will let you create environments, characters, and vehicles.
You will start with a simple flat sketch and then convert it into a 3D drawing that will "help you with perspective without actually spending a lot of time on tedious 3D modeling.”
- Grease Pencil Drawing Technique
- Creating a 3D character design from a 2D flat sketch
- Vehicle design using mirror modifier
- Environment design using instancing and randomizer
You can learn more and get the guide for $19+ here.