Skull theory

[Love365]

Hi,
First time mom here!
We have our 20 week scan next week. I forgot to ask at 12 weeks what our tech thought our Bebe was. Can you tell at 12 weeks? New to this! Wondering if I could post a picture and people can guess?

Have you got a pic that is a side view of baby? If so, post that and people will guess based on nub theory, or skull theory (though I have heard skull theory is not very accurate).