See how to put layers in a straight line on your canvas. If you have small layer shapes like circles, you will need to make sure the layer border is reduced to the edges of the shapes (using autocrop).
Use tiled clones to make a uniform design of sprinkled colored shapes.
Make a square shape with patterned edges.
Create a four hoop/leaf pattern and repeat this pattern across a page.
Make halftones on an image with dots. Use several small circles as the dots.
Learn how to make tiled duplicates of a path or object.