How to make Patterns in less than a Minute
In this Illustrator tutorial, I will show you how to create a seamless simple geometric pattern swatch in no time.
Step #1: Using the Rectangle Tool (M) to form a rectangle. Set stroke to none and fill with color.
Step #2: Choose the black rectangle and navigate to Effect > Distort & Transform > Transform. Use the settings given below. Next, navigate to Object menu and Expand Appearance. Ungroup the bottom rectangles Cmd/Ctrl+Shift+G.
Multiply your rectangle by five
Step #3: Once the rectangles are ungrouped you can change their fill colours.
Step #4: With the Direct Selection Tool (A), choose the top parts of the rectangles and drag it a little to the right holding down the Shift key. Alternatively, you can group the rectangle by selecting the group and using Object >Transform > Shear.
Step #5: Group the rectangles Cmd/Ctrl+G and open Effect > Distort & Transform > Transform. Use the settings as below
Step #6: Open Effect > Distort & Transform > Transform. Select Apply New Effect and the settings.
Step #7: And once again Apply New Effect.
Step #8: Drag the selection (make sure the whole layer is selected) to the Swatches Panel or navigate to Edit > Define Pattern. You are done!
Step #9: You can use this pattern in Photoshop too. With a Rectangle Tool (M) make a rectangle and fill it with your pattern (no stroke). Choose it, copy and paste in Photoshop into a file that has the same canvas size. Open Edit > Define Pattern.