Then remove the pins that are still in the wings. We also have to place the head , the anteanae and the abdomen perfectly strait. To do so I use entomological needles number 7 and I create a stand to stabilise them. While a work on one plastic strip on one side of the setting I always put a pression on top of the strips to help holding every thing in place and I will hold it until a minimum of three needles are in place and solid. When we put the needle or pin in the wings it is important to go for the strongest spots that is the veins or at the crosspoint of two veins.
Butterfly wings are delicate ,go slowly but firmly,use always the same hole.
It is not very nice to see big holes in the wings ,it takes away the beauty of these wonderfull creature. Never toutch the wings with fingers or sharp objects,they are very fragile. Always start in the middle of the spreading board to both ends. Be sure to keep your data with your specimens. Permanent labels are then made while the specimen are on the board.