(Sorry for bad English)

A little bit about me: I am 16 and I have had this anxiety/depression combo for about 5 years. I have depression when I'm alone, but I have anxiety when I'm with someone. It usually comes in "waves", some days/weeks I'm depressed and don't talk to anybody.

About 1 year ago I met 4 teenagers, a bit older than me, at a camp, my dad forced me to socialize. They are the only people who know I have anxiety and maybe depression and they try their best to involve me in a conversation. Now we meet every 3 months to catch up. Last meet was yesterday. After it I wasn't so depressed and even my anxiety wasn't so bad, so I invited them for a sleepover this weekend and they all agreed immediately (They were happy I wanted to socialize). And now the depression and anxiety hit me and I have no idea what to do. The last sleepover I went to was in 3rd grade and I have never hosted a sleepover. I am really worried that I'll fuck something up and I think I may be overthinking it.

Can you please give me some advice? I don't want to lose them.