https://ladysilvertongue.tumblr.com/post/174787760875/create-your-own-seamless-patterns-in-photoshop

Create your own seamless patterns in Photoshop

This little tutorial will help you create your own seamless patterns from scratch. It’s easier than it looks, I promise. I’m including a floral shape palette that I made in Illustrator. You can use this .psd to follow the tuto and/or in your own creations or CC making or recolors or whatever your heart desires. A shout back is appreciated but not required.

Enough talk and let’s start:

  1. On the preferences menu, be sure to select Units and Rulers and set rulers to pixels. Then create a new document with 1000x1000px;

  1. Go to View and make sure your workspace is set to show rulers (ticked) and snap to grid is also ticked;

Note: the shapes are inside folders in the layer panel, with labels for easy access. If you’re handy with PS and prefer to use them instead of loading the shape palette, skip to step 8.

  1. Click and hold the rectangle tool to open the custom shape menu;

  1. Open the fly-out menu and select Replace Shapes. Go to where you saved my custom shape palette and select it. Now you’ll have all my custom shapes loaded and you’re ready to start.

  1. Open the shapes palette, click on the shape you want to create, hold shift and drag in your artboard. You will see that a new layer was created in your layers panel. If you want to create a new shape, de-select all layers or create a new one and repeat the step above. If you create a new shape while a layer is selected, if will place your new shape inside and while this may be good for some kind of work, for patterns, where you’ll be repeating, copy/pasting and resizing shapes, it’s better to create in a new layer.

  2. Keep doing the above step until you have all the shapes you want to use in your pattern.

  3. To change the color of a shape, double click the shape in the layers panel and select a new color in the Color Picker window;

  4. Start placing the shapes in the artboard. Don’t place things to close to the edges and nothing should go over the edge; keep repeating and using various colors and sizes until you happy with the look.