your set up looks pretty nice. i wish i had a tent. but my closet is just fine.. anyway, this is how i germinate my seeds.. 100% success everytime.
get a good ziplock bag. then take a paper towel and get it moist to where its fully wet, but not dripping wet. then put the seeds on the moist towel and fold it over. then mist it with a spray bottle a few times then stick it in the ziplock baggie and seal it shut. next if you have a cable box for direct tv or fios or any cable box put the bag ontop of the cable box. the box gives off heat through the top so its perfect for keeping the seeds warm. my box is in a cabinet so the temps are a constant 80 degrees and its dark and they germinate within 24 hours.. if you don't have a cable box then just set it on something warm. maybe by the stove in the kitchen or even put it in the window for some warmth from the sun. the sun won't bother them, just make sure they are covered with the towel and moist.
give it a try.