Naturally, of course, I'd like to see bigger donations.
But my usual answer is; whatever you feel the artwork is worth to you. Plenty of people only donate a dollar, the occasional few give $20 or so. The rare patron has given $50, or even more.
If I may, I would suggest a donation of around $5 or $10. More, if you can spare it or enjoy the artwork. These wallpapers take time- I probably have about eight in this one, not counting what it took to update the page.
