Please link all sources, to the picture and information page, so the usage license can be seen. Here is the correct link for the humpback whale. https://en.wikipedia.org/wiki/Humpback_whale#/media/File:Humpback_Whale_underwater_shot.jpg

Please add remaining source links to your description.

The lightning is an illustration and can not be used.

From the guidelines: 5.6. 3D Renders or Illustrations as Source:
Using other people's 3D renders or illustrations (even with permission and no matter in which form they are offered) creates a false impression of your artwork. So 3D renders or illustrations can not be used as sources, unless they are entirely created by yourself. Only acceptable non-illustration brushes and clip art may be used, but you need to mention them as a source too. Don't use an image that has been altered by the source owner nor an entire work created by someone else.

Please read: http://www.pxleyes.com/courses/guide/

Thank you, most sources are ok now, in your description No. 14 Buildings 2 doesn't go to an image. Can you please fix this.

Thanks a lot, I live in Florida... Yipe Yipe Yipe! hehehe Good luck author

Thank you

Beautiful colours. like it

Author, please find a usable source for an Earth image. The one you've used is an illustration and not usable.

5.7. 3D Renders or Illustrations as Source: Using other people's 3D renders or illustrations (even with permission and no matter in which form they are offered) creates a false impression of your artwork. So 3D renders or illustrations (this includes brushes, tubes, clipart, pdf files) can not be used as sources, unless they are entirely created by yourself.

LOL! Tyson returns Holyfield's ear! LOL!! Great job!