I NEED SOME HELP

I don’t want anyone to judge me I’m just looking for advice tips and tricks. But I’m talking to this guy and let’s call him Damian but we have been talking for a while we are both into each other a lot. He said he wants me to pleasure him he said when we link up he wants me to suck him off for a bit then we would have sex. I’ve only given a bj once and it turned out bad and I’m a virgin. Any tips or tricks and advice?