First open up Photofiltre. Open up a new document whatever size you want.
Select the text tool and select whatever font you want but for this tutorial Arial Black works the best or any other big bold font.
After typing in your text click Effects and select Fill Pattern and click the folder icon next to it.
Now work your way to your Pictures folder.
After that find any texture that you want to use and select it. After that click ok and you should have your patterned text!