Looking at that aileron gap makes me wish I could clone your Ki-84. It is tough to get the gap lines to square up. I am not sure I can ever bump them properly.
Don't use the Frank as a model of perfection in the case of the Pony. The Ki-84 model actually separates the aileron from the rest of the wing. There is a physical step at the joint. The P-40's is the same way. You would do better to examine the 190s and 109s that I have done, as the graphic model is rendered as a single piece with the ailerons in the neutral position.
I think I added noise directly to the stripes instead of as a layer over them. I tried the noise layer on my previous releases as you and Greebo suggested but I don't know that I did it right.
Other than the ease of changing the effect does it have an advantage?
Having a noise layer or layers helps to blend all of your base elements together. Remember, the real plane was entirely exposed to the elements, not just the painted parts.
Also, it is worth noting the position in the layer stack that you place the noise is important as well. I place mine directly above the layers that represent anything painted, this included markings, artwork, and kill boards. All weathering layers are above the noise layer.
I obviously have a ways to go. Sorry to always be asking questions. Hope you guys don't get sick of me.
Ask away. We all benefit from having the best skins possible. Nobody benefits from hording tips and techniques. Hell, I'm sure even Greebo asked a ton of questions when he began skinning.