Darling Diapers have a nappy pattern you can buy and download and print out. Their pattern has front snap, side snap, velcro, turn and top stitched and surged nappies. Celtic Cloth also sell a pattern you can download and print out. You can google them both.

Materials.. Depends on what you want. AIO you'd need an outer fabric (say minky or fleece) a hidden layer of PUL or fleece and an inner fabric of microfleece or suede cloth(but because of suede cloth, some babies can react to it). There's a number of sites that sell fabrics just for nappy making. Wrigglebots, Fairy Fabrics and Nappies Covered are a few to name. Just google nappy making supplies and something will come up.