Estes Mini Bomarc Clone, Kit #TK-5, Part 16, Those White Backed Decals

From the original kit instructions,

Here's the decal placement.

There is some white in the background of the maple leaf circles and the Canadian flag.

I used one of my white decal layering tricks to get the right look. A clear decal sheet is sprayed with gloss white paint. White spray paint is all that's needed, no clear coat. 

This makes a water transfer white decal.

After the white paint dries - 

Over a bright light, set the sprayed decal sheet over the home print decals.

Trace the white areas needed lightly with pencil. Trace just inside the blue ring.

The white under the Canadian flag should be a good rectangle right up to the red border.

The round white circle can be inside but still covered by the thick blue ring.