B. smithi male or female

I'm not really experienced and just started, but from what I noticed is that females will have somewhat thicker legs, and a fatter abdomen. Your best bet is just getting a magnify glass and studying the tarantulas yourself. Like I said, I'm not experienced, but from what I can see in the picture it looks like it has a furrow, so it might be a female. But don't hold me to that

That's a female.