1) Ruffles add volume. So if you are top heavy, avoid a ruffled top or go for top with a v-neck and ruffles down the center. If you are bottom heavy, avoid ruffles around your waist.
2) Try to balance your overall look by pairing ruffles with tailored, structured pieces. Ruffle top will look best with skinny jeans/pencil skirt. Wear simple t-shirts with ruffle skirts. If you are wearing a ruffle dress, try to go for strapless/spaghetti strap or wear a belt to add curves and avoid looking bulky. Make sure that that the ruffles do not overwhelm your frame.
3) As always don't overindulge. Wear only one clothing item with ruffles.
Here are some cute pieces to try on....
Top row (L to R) : Forever21 ($30), Forever21 ($2o), ardenb ($49) , NY and Company($33)
Bottom row( L to R): topshop, Ann Taylor($48)
Bottom row( L to R): topshop, Ann Taylor($48)