What's the right way to tell my husband I want to finish ? Lol

Ok ladies so I love my DH very much. Unfortunately me and him haven't had the experience with other people so we have learned as we went. This has been an issue from the get but after 4 years bein married I don't know how to break it down to him without hurtin his ego. I would really like to finish when we have sex. I'm not saying I've never had ... Oh I have! But it's not as much as I would like. He already tends to not last too long and me not finishing really doesn't satisfy me. I know we should be open about this to eachother but I just don't know how to tell him I would like more stimulation or foreplay. I've made it pretty clear by giving hints. But I think when he is in the moment he just does his thing. Any suggestions?