If you could learn a single piece of software, besides your main CAD or 3D program(SketchUp), then Photoshop would be the one we would highly recommend.
Photoshop is a very versatile software tool for architects, as flexible for seamlessly compositing different elements into a beautiful photomontage as it is making your renders look even more stunning. Photoshop can turn an average looking image or drawing into a stellar asset for a project.
Here ALADDIN ACADEMY takes you through the tools and techniques used by Professional Architects and Designers, which we hope will help you to discover new work techniques and better ways to apply.
So that you carrier can be
1. 3D Modeler,
2. 3D Visualiser,
3. 3D Renderer,
4. 3D Interior Designer,
5. 3D Architectural Visualiser etc.