When my sister was sightseeing in Europe, she found that there are beautiful crochet butterflies for sale in souvenir shops. This prompted me to look for free butterfly patterns on web. There are a lot of crochet butterflies similar to the one my sister saw, and many of the crochet patterns are almost identical.
The orange butterfly is the most common one. I have added an extra round of single crochet to it. For the pink one, the size of the upper and lower wings are different, and there is a picot in each wing. For the green one, in addition to the size, the pattern of the upper wings and lower wings is also different. I think the green one is the more beautiful.
英文圖樣（Pattern in English）：
橙色 orange: www.crochetnmore.com/butterfly.htm
粉紅色 pink: http://dishclothdiaries.blogspot.com/2009/09/3-d-butterfly.html
綠色 green: http://www.maggiescrochet.com/free-maggies-crochet-monarch-butterfly-fridgies-pattern-p-250.html