There are so many sites for making your own cloth diapers www.diapersewing.com for starters. I am due in June with my second and will be using cloth form the start, so I will have 2 in cloth. I am in NZ so I get all my patterns from www.thenappynetwork.org.nz and my PUL from a local online store called Greenbeans.
Making your own is so easy and so much fun.
Those covers look great.