Pastel Pad License.

Simple.
The artwork, illustrations, clipart and other images posted on Pastel Pad can be used for free for personal and commercial purposes. The images are royalty free.
Downloading, modifying, copying, mixing, printing is allowed.
Asking for permission and giving credit is not obligatory, but highly encouraged.
The prefered attribution format: Artwork name (if any), Artist, URL via Pastel Pad.

Compiling the images for distribution via competing stock marketplaces is not included and is not allowed.