Originally Posted by AlexK Gonzalo, you can't just "take" the images from istockphoto

It is a sample. I'm respecting the watermark on it. When you design something for a client that needs and image you have to show him/her how it will look in the design and then he/she will decide the buying of the picture. That's way I mentioned the source.
Is there anything else you think I should add in a case like this?