You can define any image or selection as a pattern that can be used as a fill in Photoshop. These instructions apply to all versions of Photoshop from 4 up.
Time Required: 2 minutes
- Open the image you'd like to use as a fill.
- If you want to use the entire image as your fill, go to Select > Select All. Otherwise, use the rectangle marquee tool to make a selection.
- Go to Edit > Define Pattern.
- Go to another image or create a new image.
- Select the layer you want to fill or make a selection.
- Go to Edit > Fill.
- In the Fill dialog, set the contents to use "Pattern" and click OK. In Photoshop CS4 and later, make sure "Scripted Patterns" is not checked, (But do explore it later... it's cool!)
- Only rectangular selections can be defined as a pattern in some very old versions of Photoshop.
- Check the box to Preserve Transparency in the Fill dialog if you only want to fill the non-transparent portions of a layer.