Photoshop Art

Lately I've been playing around with a trial version of Photoshop Essentials 10, the pared-down version of Adobe's Photoshop.  I'm using it to create modified images for my course this semester on How to Look at Art.  Yesterday I started doing some compositions from scratch with the range of imaging tools the program has to offer, especially the different "brushes."  Here's what I came up with:

It's an abstract composition, obviously, that has the distinct feel of an impressionistic watercolor, or a "water-acrylic."  I like what I came up with and will do more of these, I'm sure (and probably post them into this blog), but for all their power and versatility, a computer mouse and Photoshop are not a brush and paint.
One of the primary reasons I love doing art is the physical, visceral connection between me and the canvas/paper/board through the brush, pencil, pastel stick, or whatever tool or medium I'm holding in my hand.  Perhaps I should try this sort of thing on an iPad--if I had one; it might be analogous to "real" drawing and painting.  I do use a sketch application on my smartphone, which is nice for capturing visual ideas where I happen to be at the time.  But it's never as good as those old-fashioned tools for creating art down in my studio.