This tutorial for Adobe Illustrator goes over how to scale patterns in order to make the actual pattern larger or smaller to best fit your project.
You may have noticed that when you try to scale an object in Illustrator that has a pattern inside of it, the object will typically get larger or smaller, but the pattern itself will stay the same size. This tutorial shows how to fix that problem.
This video also covers how to access and use the different pattern libraries in Adobe Illustrator - some of which are super useful.
Questions or comments? Feel free to leave them below! :)