Hi, thank you for your words.
Blue, red and white again....
I use an old compass on which I fix a blade of scalpel. Pochoirs is cut in some paper to make pochoir (Frisket). Use it without supporting over, It is necessary to go past again several times.
The wing is white first. The small disc don't move. The secont coat is red.
Masks is centered with the compass and with the mark of the top of the compass in the central disc.
The blue must be painted.
A+