Find a foundation color that matches his skin tone and apply it evenly to his face. Apply a matching powder over the foundation to finish the base of the makeup. Eye makeup will help accent his eyes and make them look bigger. Eye makeup is a great way to make a boy look more feminine.  Apply eyeshadow on his eyes to accentuate his eye color. Consider using two or three colors to blend onto his eyelid to make his eyes look bigger. Use eyeliner to draw a line at the base of the eyelid. This will accent the eyes and give a finished look to the eye makeup. Finish with mascara on his eyelashes. Use black mascara if he has dark eyelashes and brown mascara if he has light eyelashes. For a fun, festive look you can use colored mascara, like blue or purple, to make his eyelashes pop. Blush is a great addition to dress a boy like a girl because it makes the face look more feminine. Apply the blush to the apples of his cheeks and his cheekbones. The finishing touch to makeup is adding color to the lips. You can line his lips with lip liner and then fill in the rest with lipstick. Red, Pink, and Neutral colors are good choices to pick for his lipstick.

TL;DR in Chinese:
抹上粉底液和散粉。 化眼妆。 在他的脸颊上涂抹腮红。 最后涂上唇膏。