Blowjob advise??!!!

Me and this guy have been talking and lastnight we met up, like we’ve met up before but this time we went to this place and I ended up giving him a blowjob for the first time and he cum within like 20 seconds is that normal or did I do anything wrong 🤷🏽‍♀️ also we are meeting again tonight so if anyone has any tips or tricks to make it last longer and be pleasurable for both of us🤷🏽‍♀️