All my years of Photoshop have been focused on what you might simply call "image enhancement" - that is, making photos look clean and realistic for the various newspapers, magazines and other publications I've worked for. I'd like to try a bit of artistic stuff. Every day on various forums I see people turning their photos into works of art, using tonemapping, or colour filters, or even just simple vignettes and lens effects. It's all new to me. My question is; do you do all the basic correction to your photo first, before working it up into something creative? I mean, is it a good idea to achieve a nice clean photo that would be perfectly acceptable as a print in its own right, before applying artistic effects? Or can good stuff be achieved by taking a photo that is underexposed (for example) and just going with it?