I'm not a tarp expert, preferring a single-wall tent, but I noticed that you have the tarp pitched all the way to the ground except in front. With no ventilation in the lower half of the tarp, condensation-lots of it-is inevitable.

I'd want to leave an inch or two space between the ground and the tarp around the edges. It might make all the difference.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey