Many aspiring concept artist who I have spoken to seem to ask me about my techniques and what photoshop brushed I use. Though both technique and photoshop brushes are needed for digital creation the one ingredient that is crucial to creating a concept design is adding the description of what it is. Drawing or painting a great concept may not always be sufficient in illustrating what the concept is. You have to be able to verbalize or write a description of what that object is and its functionality, history or mythology etc. This is not always easy but it is probably one of the most important skills you must have as a concept artist.
Below is an example of a description attached with my concepts. This was done for Richard Garriots Tabula Rasa. These concepts and ideas and functionality and technology were to be the core ideas describing the Technology of the Elohs which were the ethereal alien beings at the center of this Epic story and game.
I did a lot of research and also filled in the blanks with my own ideas about their technology and how it works. Click the image to see a larger version and read the descriptions it's all geeked out.