there too sharpe in shape and you need to round off the edges, get the round curve plug in. look at the picture i posted the top aerofoil is the shape you want to create
you need to overlap slightly as well each aerofoil. you need to imagine the air over the top of the first aerofoil needs to feed the back of the next
look at these pictures from scarbs
1) look at the shape, yours are too curved. the shapes will be shallower (in your pic right hand side) then get sharper (in your pic left). but not as shape as yours.
2) look at the slight overlap and how air is being fed from one to the next
there for rear wings, but the same principle applies
----
you need to have depth to parts to, the outside bit of your endplate (the horizontal bit) is 2d so is those flick bits on your aerofoils (which you don't need if you follow the above)
your getting the idea of things and made some big improvements, you need to make sure you get your shapes right and a decent thickness to things. 5-10 mm for example depending how thick you'd guess it would be (by looking at f1 cars). my front wing aerofoils have a 10mm thickness at the start to a 5mm thickness, rear wing main plane 20mm to 10mm.
