A while back I put together a homemade awning from a decathlon tarp using some drain rods and bungee balls (to hold it to the three hooks under the AFT cover). It's not the prettiest thing in the world, but it works well enough for us

This would mean that when wet, water would run down the awning towards the bongo. As far as I can tell, it should simply run down into the gutter above the door to the ground, but just wanted to check if there were any hidden gotcha's to this approach.
Does anyone else have an awning that slopes down towards the van?
Many thanks,
Phil