You may do male deer exercise(google the phrase) It claims to improve your sexual health within a months time. To delay the ejaculation , you may distract your mind by slow and deep abdominal breathing. Male has to calm himself and decrease his excitement and the female has to increase her excitement. In this way they can balance each other and orgasm simultaneously. Do not worry if you fail in the initial attempts. Initial failures are normal occurrences.Pumping and slowing down alternatively will lengthen the coital period. One can do kegel( contract the muscle we use to stop urine stream) to get different type of sensation.With kegel movement of male genital shaft will be vertical, causing different type of plesing sensation. Of course one must learn it by practicing kegel exercises. For female it helps to strengthen pelvic floor. She develops compressing capacity of vaginal muscles. Rubbing clitoris; male can rub woman's clitoris by leaning on her and rubbing dorsal part of genital organ on clitoris. This pleasures woman immensely.The night of marriage the couple is dead tired. Doing anything in that night will not be enjoyable. Intercourse should be postponed to the next night.This are some of the practical suggestion to initiate the sexual activity.
Are you talking about physical length of your erection, or stamina (how long you can stay erect for her)?