I've made a few of them now, but I just loved these colors so I took a picture. The bapron tutorial and pattern is available at here from Craftiness is Not Optional.
I just added a pocket (I like having them to catch crumbs) and I backed it with rip-stop nylon instead of flannel to give it some water resistance. It fits well on my chubby 6 month old. I bet it will fit for a while now as she starts to grow up more than out during the crawling age.