Clip Arts are used for web designing and many other related applications. Same is the case where these Halloween clip arts will be used by you for the web designing purpose of increasing awareness amongst everyone else.
You will find these clip arts being used everywhere. But try to modify the stuff. If you have to take ideas, then just have a look at the images. There you will find these clip arts for all kinds of aged people. They look like comedy sometimes and also terrifically horror sometimes. Choose as per choice what you want and implement innovations for the betterment of these Halloween clip arts.