Always good to make tiny holes in the cling foil
A tip is to buy microwave film instead (it has already small holes in it). It should be possible for moist to escape, normal cling foil doesn't have holes in it, so it would be better to take the top off every day for an x period of time (like 10minutes or so) and let her evaporate some moist. Otherwise you risk too wet/mouldy conditions, especially when you wetted the soil like you did and summer is over ;-)
Cheers bud