That tail looks male as well. Body shape, from what I can see (a full body shot would be best), looks pretty good. They are definitely a slender species compared to ball pythons! Since they are both male, most likely, and already adults, I wouldn’t feed them any more often than once every 2 weeks. The ideal body shape for an adult corn is sort of bread loaf shaped (if you were to take a cross section). Roundness, stretched scales (where you can see skin in between), creases or folds, a spine that is indented, or ‘hips’ (fatty deposits right before the tail) are all signs of an overweight corn. The opposite, being too thin, would be a more triangular shape with the spine prominently visible.