jiffy clones?

so i got one of those little jiffy greenhouses for seeds i ordered. my seeds are out of it and on there way to vegging! my first seed order by the way!.
my question is if i want to use it for clones do i keep the lid on tight or should i let air in? i have a great rec. with clone i just never did them this way. any advice?

i always cloned in dirt and just mistede them every once in a while. is this any faster?