Hi, Terry Grant here. While I love to draw by hand, I also love doodling around on my computer using Adobe Illustrator. Making tiled patterns is endlessly entertaining. I start by drawing a simple square design, like this leaf. This design element is called a tile. If you were making a patchwork quilt you'd call it a block.
The fun really begins, however, when you start to rotate some of the tiles.
You open up a whole new world of possibilities when you flip your original tile to create a mirror image and use the two together.
The easiest way to make tiled patterns, in my opinion, is with a drawing program like Adobe Illustrator or CorelDraw, but you can also make them using paint programs like Photoshop. You can even create tiled patterns by hand with tracing paper, colored pencils and patience!