I made some correction on my end. please help to point out my mistakes.

Today is Halloween. Children in the kindergarden were in their best attires or Halloween costumes. On their innocent faces, you could see some simple Halloween make-ups. Some of them had their faces painted in white, with some stitches added onto them. But the most popular face painting was the one with some dry blood stains painted at the corner of the lips. Some of them wore witch hats with blooms held in their hands. Some of them had their eyes doodled in black color, like wearing heavy black eye rings. 

They had made fun of their friends throughout the day, they also had some dancing and eating sessions. A “beauty” contest was held in the kindergarden and the “Vampire” had won the competition.