Here are some sketches I made in artclass when I still was at college, but I've added some recent ones as well...As you can see, they're no pieces of art, but they sure help me to get back that fluent swing into my arm and hand...
Only practise is what makes an artist great...so to get good at it, is to draw whenever you have time to do it, anywhere and with anything that leaves marks on any surface you can lay your hands on...