Even though contour problems may occur after Coolsculpting, the risk is very minimal. As long as you're a good candidate for the procedure, you should look great afterward!
As Zeltiq is not invasive and doesn't remove more than 20 to 25% of the fat after one treatment there is enough buffer to smoothen the periphery unlike liposuction, that if not feathered enough, can leave a depression. Some people may need adjacent areas treated but CoolSculpting is designed for focal areas not whole body contour reduction.