rcboater Bill

Here are German WW1 Maltese Crosses,  sized for the 1/72 Fokker Triplane.  Three sizes:  Large(14mm) , for the top wing, Medium(12mm) for the bottom wing, and small (8mm) for the fuselage sides and rudder.  
 
I grouped them with an outline box to make them easier to remove from the sheet. 
 
If you want them a different size,  ungroup a cross, then resize the image to the desired size, then draw a new box around it. 
 If you want to make a matching mask for a white outline, just cut with a an appropriate offset margin.