i've been doing this for a few years now. after washing my hair, i apply a moisturizer and then the vaseline. i braid my hair up and put it in a bun and do the baggie trick. the first night, i may take the baggie off to let my hair finish air drying. after that, i put my hair back up and don't bother it until i wash again the following week. i don't think there's a right or wrong way. it's all a personal preference. the reason i stopped messing with my hair during the week is because i've had an issue with excessive shedding for a while now.