There are some very good pieces of artwork available on ShareCG with the Usage Rights set to "Unrestricted use" (which means you can copy and use them however you want, and you don't even need to give credit). Here are a few of them.
I only looked at the first 12 pages out of a 108-page collection - maybe you can find some good images in the rest of the set.
www.sharecg.com/b/1/Art/?s=dd&member_ty ... 6][2528]=1
Hey! Look At What I Found!
by "Ivy"
Larger version at http://www.sharecg.com/v/84607/browse/1 ... I-Found%21
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=152198]
W.W.W.W.W.
by "vrxitachi"
Larger version at http://www.sharecg.com/v/84554/browse/1 ... /W.W.W.W.W.
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=152106]
garden from Liliput
by "Bimm Florin"
Larger version at http://www.sharecg.com/v/83979/browse/1 ... om-Liliput
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=150950]
Maremma sunset .
by Nick Carter
Larger version at http://www.sharecg.com/v/84165/browse/1 ... ma-sunset-.
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=151250]
The Flying Dutchman
by "Ivy"
Larger version at http://www.sharecg.com/v/83418/browse/1 ... g-Dutchman
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=149812]
Army Girl
by "Tjeb"
Larger version at http://www.sharecg.com/v/82662/browse/1 ... /Army-Girl
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=148190]
Dropout
by "Tjeb"
Larger version at http://www.sharecg.com/v/82264/browse/1 ... rt/Dropout
Technocoon
by T.J.Newton
Larger version at http://www.sharecg.com/v/81732/browse/1 ... Technocoon
The Spirit Bridge
by Pete Williams
Larger version at http://www.sharecg.com/v/81171/browse/1 ... rit-Bridge
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=145173]
The last chance
by Nick Carter
Larger version at http://www.sharecg.com/v/80872/browse/1 ... ast-chance
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=144509]
--
Rob Kelk
"Governments have no right to question the loyalty of those who oppose
them. Adversaries remain citizens of the same state, common subjects of
the same sovereign, servants of the same law."
- Michael Ignatieff, addressing Stanford University in 2012
I only looked at the first 12 pages out of a 108-page collection - maybe you can find some good images in the rest of the set.
www.sharecg.com/b/1/Art/?s=dd&member_ty ... 6][2528]=1
Hey! Look At What I Found!
by "Ivy"
Larger version at http://www.sharecg.com/v/84607/browse/1 ... I-Found%21
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=152198]
W.W.W.W.W.
by "vrxitachi"
Larger version at http://www.sharecg.com/v/84554/browse/1 ... /W.W.W.W.W.
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=152106]
garden from Liliput
by "Bimm Florin"
Larger version at http://www.sharecg.com/v/83979/browse/1 ... om-Liliput
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=150950]
Maremma sunset .
by Nick Carter
Larger version at http://www.sharecg.com/v/84165/browse/1 ... ma-sunset-.
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=151250]
The Flying Dutchman
by "Ivy"
Larger version at http://www.sharecg.com/v/83418/browse/1 ... g-Dutchman
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=149812]
Army Girl
by "Tjeb"
Larger version at http://www.sharecg.com/v/82662/browse/1 ... /Army-Girl
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=148190]
Dropout
by "Tjeb"
Larger version at http://www.sharecg.com/v/82264/browse/1 ... rt/Dropout
Technocoon
by T.J.Newton
Larger version at http://www.sharecg.com/v/81732/browse/1 ... Technocoon
The Spirit Bridge
by Pete Williams
Larger version at http://www.sharecg.com/v/81171/browse/1 ... rit-Bridge
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=145173]
The last chance
by Nick Carter
Larger version at http://www.sharecg.com/v/80872/browse/1 ... ast-chance
[img]http://www.sharecg.com/get_image.php?type=WebPage&upload_image_id=144509]
--
Rob Kelk
"Governments have no right to question the loyalty of those who oppose
them. Adversaries remain citizens of the same state, common subjects of
the same sovereign, servants of the same law."
- Michael Ignatieff, addressing Stanford University in 2012