sexing bearded dragon

I hope I'm not bugging anyone by asking so many questions, but I'd rather be safe than sorry! I'm getting a beardie this weekend, and was wondering whether I should get two or not. I tried to sex them today but they're still small so it's near enough impossible to tell whether they're both boys...

I have had my beardie for around 3 months now,but have never been able to accurately sex it. At the moment i think its a female but i am not 100% sure. I will leave some pictures below. Thanks in advance.

ok i hear about the 2 bumbs at the bottom of the tail that might tell you its a male but.... i also heard that they say a females head narrower and pointier then the male beardie is this true?

What age can you tell the gender from?

Hi all I think I've sexed them but want to check before I decide to separate them. I estimate them to be 7-8 months old Male - Clyde Female - Bonnie