The following are some links to videos, books and podcasts full of ideas and techniques I believe will be helpful for the Concept phase of your project.
(Note: You must be logged in to my.byu.edu to access videos from the Gnomon Library. Our subscription allows only five simultaneous users.)
Ways To Be More Creative
Thumbnails / Roughs
Perspective Drawing & Comp Sketches
How To Draw: drawing and sketching objects and environments from your imagination — Scott Robertson & Thomas Bertling
Fundamentals of Perspective 2 — Two Point Principles and Concepts with Gary Meyer