This rule counts for all images in my galleryIf you used any of my photos commercially before the 23.05.2016, you don't have to pay the points.
From now on, if you use one of my photos for commercial use/commissions (no private use, art-trade, gift, etc.), you have to pay me 10. This rule does not count for prints. This does also not count if you use my photos as drawing references. It's just fair to me as I offer these photos for free, although I payed for the equipment, spent my time assorting and uploading the photos, editing them, etc.
NEW EDIT: Additionally, my photos may not be used commercially outside of deviantart. I might make exceptions, especially when it comes to RP sites, so feel free to ask.