Most of the images are under copyright or licence to the member who uploaded it and so you will need to contact them for details as we do not have the rights to it
Go to the image you are interested in and see the name of the artist at the top of that page, Click on that
On their profile page is a contact link, under their headshot.
If wanting to use the image for any purpose, make sure to let them know your budget in the first email so they have an idea you are not spamming them. Please do not ask our members for free art. Art is their business like any other
Hope this helps