How could I fix this problem?

On sunday the boy I've liked for 5 years invited me round his house. So after church I went round his house (8ish) and we were on his bed and he kissed me then said 'aren't you going to kiss me back' I did honestly want to but I've never kissed anyone before >'.'< After I came home I texted him saying sorry about the kiss I was really nervous and he said it's okay then I said maybe next time :) and he said yeah . How can I fix this so he knows I still like him? Also my friend said he wll probably invite me round again but how can I make sure he invites me round? Also how do I kiss him o_O?