This Gelbe 10? It’s actually a D-13.
You may want to clear it with Pyro. He’s has let other ac be skinned even though they are not the correct model.
http://forum.keypublishing.co.uk/showthread.php?t=26089 Try this book....
A few tips…
The underside panel lines are way to "bold". I suspect you have an issue of getting the lines to look good on the underside and on the darker top.
There’s several ways the do this. The easiest is to make the under side panel / rivet lines separate layers so you can adjust those independently.
You can also create another layer of your panel / rivet lines and change them to white. Put this layer (these layers) underneath the darker panel/lines rivets. Offset them by 1 pixel back and down.
Now to get these "hi-lites" to line up you will need several layers. One for the right wing one for the left etc... This way they can all be offset in the right directions.
Also again to deal with the lighter underside you will need to have separate layers for the underside panel / rivet layer.
You will have many layers of panel / rivet lines but this way you can adjust the color / opacity every part of the ac independently.