I've been doodling since early high school with a packet full of assorted sizes of permanent markers.  I realized that I like to draw just about everything because I never knew what I really wanted to be when I grew up.  I think that's what I like about creating art and designing things, that it always changes.  Sometimes you have to study up the topic you are going to make an art piece or professional equipment on and create a theme or a blueprint around it.  Some things can get really technical and that really makes me strive to understand the topic being laid before me to make a compelling visual explanation of how it works or what it does.  From the line, the font, the imagery, the texture, the shape, to the visual impact of the image, it all has to have meaning in order to fullfil it's purpose.  Most of my Fine Art is very Whimsical and just an outlet for fun but I do use it to create blueprints on future professional concepts to bring to life.