Meeting my guy’s daughter

I need help!!! I am meeting my guy’s daughter, she is 11. I’m really nervous and freaking out because I want our first time meeting to be everything! Should I bring a gift? Go somewhere fun? What do 11 years olds like to do 😩 and what makes it worse I don’t have children so I don’t know how this goes. She has never met the women he has dated... only one so this is also nerve wrecking for me and seeming like a lot of pressure as well as I’m only 24 and my guy is 31 so the age difference is up there lol so I’m afraid she may notice that I look really young ( I have been told I look 18 all the time lol ) and that may cause a problem too lol I could be over reacting 😂 idk smh I’m just everywhere at this point 🤦🏾‍♀️ does anyone have ANY advice?