Good job , now if yuo want to try some cool effect , try this on a sheet of wood or paper first then your plane .
Get the model master exaust premixed small bottles .
Put a shape straight piece of poster board down where you want a staight edge give it a light dusting the length of the sheet of poster board , pull it back when your done , you will see a straight edge and what appears to be a wing warn greesed edge. As described above its esy to do and very cool , they start darker near the front end and wear lighter at the back end