Flowering light, How much is too much?

hey guys got one last question here.
so i have a storage room that i sectioned off into 2 spaces one for flowering and one for vegging.
i bought a tarp and nailed it up and used velcrow on one side but my question is some light gets through from my veg lights. and its hardly any i can vaugly make out my hand in front of my face but there is some light.

does it need to be PITCH black?

its only because the ceiling has boards that go accross it and i had to cut and staple around all of them.

i wanna know now if i should find another way to section it off or if it wont effect flowering.

it should be pitch black, what about putting up a piece of foam or wood on your cieling first so it will be flat then put up your walls or cutain. or you can just use lots of duct tape;}

I dont know secks!! like to see it for myself but I sure wouldnt wanna take the chance! I guess as long as it is NO brighter than a pale moon !!

good idea witht he boards
i was hoping not to have to be a carpenter on this one but ok.
ill try to seal as much as possible

i have done some cool shit with carboard and duct tape.

so would not being able to see your in front of your face be a good amount to go by?

i duck taped as much as i could and its not perfect but definatly dark

i cant make out my hand