The best advice I can give you is to take things slow. At first it is a pretty perculiar shape to get your head and, more importantly, your finger around, but practise helps develop muscle memory. Eventually you'll not even notice you're doing it! (Then, if you've not already, comes the barre chords - oh what a joy they were!!!)
Educatedfilm - your playing's not that odd - and it's definately not wrong. It's actually probably a better method of barring the chord because, as you say, it leaves your pinkie free...hmmmm...guess what I'm going to see if's comfortable!!!
Good luck, hope that was some help, have fun!
Don't worry too much about me, ignore me long enough and I'll go away.