At least two variations with white and black (or dark) background. (If
you decide to do more variations, please keep backgrounds neutral so as
to fit any Web design and not attract too much attention of the visitor.)
One or more of these sizes: 110x32, 120x60, 125x50, 180x60. Do a 88x31 if you can fit the text in.
Format: PSD or XCF with text layers kept as text so that we could change e.g. the description.
Either standard or freely available fonts
No fancy fonts please. Have I already stressed the importance of readability? We also want to be able to edit the texts
No need to align with the color scheme of our Web site.