You should choose the towel wisely. The size of the towel should be appropriate according to your height and size of the body. Wearing too small or too large towels is not recommended; therefore the size should be reasonable to keep you safe. There is no need to buy an extensive towel but it should be beautiful and big.
To make sure that the towel is tied well and grips your body firmly, place one end of the towel under your arms and wrap it around your body, making sure that the other end of towel is on the other side of your body.
While doing the wrapping part, make sure that your chest is tightly tied to the towel as this will plays a strong role. After you wrap your body in the towel, and the second end is in its place, pull it a little harder to tighten it. Remember that it should neither be too tight nor too lose and you should feel comfortable in it.
After both corners are in their places, insert both ends in the towel and you are good to do whatever you want.