Not really that good

What I need is a pic of the length of tail from clocoa to tail tip. This is a good way of giving you an IDEA of what you have. It's not foolproof, the only way of knowing for definate is to get them probed. The longer the tail, the more likely it is to be a male. Will post a couple of pics tomorrow, one of our males & one of our females of similar ages and you'll be able to see what I mean.
Get yourself a copy of the Kathy & Bill Love book, Cornsnakes, The comprehensive owners guide, if you can. It's a fantastic book &, in my opinion, every Cornsnake owner should have a copy.