There is no copyright issue if you are the creator or purchaser of images and artwork. It is that simple.
As a webmaster and graphic designer, I have come across many instances where clients are using a photograph or art work they found on the web. They consider or have used these images on their web sites, advertisements and so forth without permission.
These clients have in many cases learned the hard way by incurring hundreds and thousands of dollars in judgement by the creator of the images that were used without permission.
Our Number One Tip Regarding Use of Images:
If you use any photograph or artwork of any type media in your advertisements that you do not own or have acquired the rights, DON”T. Never use an images that you do not have a right to use.
The prices of stock photos is so affordable these days, it best to pay a few dollars and get the rights to use it.