Making of the ailerons depends on how large your model is going to be . Judging by the drawings it is not of the very large scale. The easiest way for making the ailerons is shortening of the aerofoils at the trailing edge and attaching of one long strip of quite hard balsa . See the pisc below. At the areas where the aileron hinges are going to be the stiffeners should be added. In the two shots below these are the balsa blocks.
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the source: the Internet
Or if the model is large the aerofoils should be shortened too. The trailing edge should consist of the top and bottom balsa strips with a balsa slat between them. In the case the trailing adge should look like the "
]" bracket in its cross section.
View attachment 624904
View attachment 624903
the source: the Internet.
In both cases the aileron leading edge should be made in the same way or like in the first way at least depending on the model scale.