greetings. an image of this quality will cost $ 100 for one picture. If the changes are only in details, that is, as indicated, you have a forest, a dead forest and so on. That is, if we draw the main image - the plan, the composition, the masses. And then beat it in different states, then the main image is $ 100, subsequent changes of $ 50 each. That is, if we draw three types of forest completely different, then the price of $ 100 for the image, the total cost is 300 $. If we draw one type of forest and change it in two versions, then the price of the main image is $ 100, and two changes for $ 50. the total amount for three images is $ 200. Thank you. I wait for you feedback.