To use an '''[[WP:image|image]]''' on Wikipedia, it must first be '''uploaded'''. However, there are some important restrictions on what images Wikipedia can accept. This tutorial introduces you to the relevant rules and guidelines.
First things first: if you do not already have one, you will need to [//en.wikipedia.org/w/index.php?title{{=}}Special:UserLogin&type{{=}}signup create an account] in order to upload images.
Hopefully, your image(s) will be improving an article very soon!