I mean I'm 22 and have always had quite the cock despite feeling insecure. I love random video chat sites or showing my cock to get reactions. For really anyone.
Well, dick pics alone do nothing for me and I've never posted or shared anything like that. But, I am a bit of an exhibitionist, and have shared full frontal nudes with many people, and have posted some online. I run, lift weights, and do yoga so I have a fit athletic body. My cock is average at best, but I don't mind showing myself off.
Be proud of what you have I know guys who liked showing off their big dicks, and got plenty of women, because of their size.