How to become a better runningback?

how can I become bettter at running back

okay I'm a wide reciever but I have played runin back before but a good running back consists of speed and agility, strength and power, and the last and most important component is heart and determination. so you basically need to stregthen your calf muscles at of everything else and do all of cartio(running) increase your 'jukin', and I hope that you have a good QB. but over all you just need to have a good techique or w/e...and I hope your not afraid to get hit...because I'm tell you bro your gona get hit.
but just have fun wit it
hope I help bro.

yea thanks

I was originally a linemen but I can run pretty good