Be it sending messages, pictures, audios or videos, we always turn to WhatsApp to communicate with not only one but a large number of persons
Message Yourself
If you want to message yourself on WhatsApp to store any important information, tap on Big Message icon (green in color) on the bottom right corner and click on your name to access your own chat
Hide your profile picture
If you want to hide your profile picture on WhatsApp, go to Settings > Privacy > Profile Photo and choose whom you want to see your DP by selecting any of the options