One of the qualities I like about most carpet pythons is the head development once they become fairly mature. The back of the head balloons up a bit and they actually resemble some venomous species.
Jewel is getting there and probably in another couple of years, she'll have the triangular head carpets are known for.
I've seen far more pronounced heads on other carpets however and if you have a nice shot of one of your animals, feel free to post it here. Zig and Reinz,, I know you guys have a few of these!