I am an architecture student, during the 3 years I have been studying I have learned the following: design floor plans, 3D designs, Sketchup modeling and rendering.
Within the programs that I know how to handle, I can mention AutoCad, Sketchup, V-Ray, Twilight, Krita, Photoshop.
I am not an expert but I have been studying for years and I feel capable of doing work capable of satisfying your needs.