Covering the entire engine sounds nice, but the cowl would need to be on the order of an inch wider, maybe a bit more.  It is already huge!  Fortunately, it is easily detachable and if I don't like the way it looks I can easily build another one later.  I am going to use liquid sheeting to cover it.  First time to try that stuff.

I will follow up with wing progress soon.  I have to figure out how to build both wings with aerilons as I have mostly decided to go that direction.  Two servos, 4 aerilons.