I have learnt to use images to make repeating patterns in Photoshop. Etsy is a great source of downloadable images which come with commercial licences for use with small businesses. Print your own fabric has become really fashionable recently and lots of companies will do it. Some will do as little as a metre. It often takes a few weeks to arrive from China, but its so worth it when your find a supplier you love!
Here is a sneaky peak at some designs that I have already sent to print for the winter season. They will be printed on French Terrry Fabric which is a heavy jersey with a looped back. Its like a cross between a t shirt and a pair of joggers and is perfect for layering winter clothes for kids.