Sift flour, baking soda and salt together into small bowl. In medium bowl, cream together sugar, butter, eggs and vanilla. Add flour mixture and crushed candies. Form two logs. Place parchment paper on cookie sheet, and evenly space the two logs on the paper. Beat egg white until foamy, and brush on top and sides of each log. Bake in 350 degree oven for about 30-35 mins, until golden brown. Remove from oven and allow entire pan to cool completely on cookie rack. Remove the cooled logs from the pan. Using serrated knife, slice logs on a diagonal into 1/2" slices. Place slices on cookie sheet and bake in 350 degree oven for 10 minutes. Turn over and bake again about 5 minutes, until just beginning to color. Remove from rack to cool.

Cream butter and sugar. Add egg whites gradually and keep beating until very fluffy. Add in extract, beat until combined. Fold in flour and divide batter in to two bowls, one regular, and one is mixed with food coloring. Pour batter into two separate pipping bags and pipe them onto greased baking sheet. Bake at 350 F for 18 mins (dry and crisp).

On electric mixer, beat egg whites until soft peak on medium speed. Add in a little sugar at a time while keep beating. Once all sugar is gone and dissolving, turn up speed to the highest and keep beating for 10 minutes, until firm stiff peak. Once stiff peak is reached, if you would like to color and flavor it, here is the time. beat for a minute. Spoon meringue into a bag with nozzle and start piping shapes of your choice on baking pan lined with parchment paper. (For lazy version, just drop a dollop/tbsp of meringue on parchment instead piping!) Bake at 100 C for 50 minutes.

Preheat oven to 180 C. Grease your pans (2 7 inch or 1 9 inch), line with parchment, and grease again. Beat egg whites and emulsifier until fluffy. Add in sugar gradually while keep beating until thickened and firm. Fold in flour mixture with corn starch. Fold in melted margarine. Divide into two bowls, one as is, one colored with blue food coloring. Pour batter alternating each other on the center of the pans. Bake for 30-45 minutes until knife inserted in center comes out clean. Cover and decorate with buttercream and give a proper topper of your choice (stork, baby, baby cart etc)