[CyberFonic]

May I suggest that you learn to draw. The old pencil and paper way. Technology marches on, but core skills will hold up well. You'd really communicate more effectively with visually oriented people if you can sketch on paper or a whiteboard to illustrate what you are trying to convey. You can always scan your work or use a tablet to create directly on the computer.

Take a look at Betty Edward's book "Drawing on the Right Side of the Brain". It's probably the best intro around.

As a "Biz Guy" your enduring quality and contribution is to hold the vision and communicate it effectively to the specialists, be they PhotoShop or CAD skilled.