I've been creating images for a long time in Photoshop, but it just suddenly dawned on me that I might need to actually print some of my creations and that 72DPI probably wouldn't cut it. What is a good DPI/resolution for print? Most of the design I've done before has been for web, so it's worked out, but if I ever have to go to print, it'd be nice to do so without having to upsample the image. Is 300DPI a good all-around DPI for an image that will be used on the web and for print?
If space is not a large issue, just save in the highest quality that you will ever need to print in. Downsampling is much easier than upsampling.