Yup. Getting or making a set of real picks would be a great start. It's true that you can pick locks with a lot of makeshift stuff, but it's a miserable way to try and learn.
If your rear two pins are not binding, it's 'cause they're not "ready" to. You have something else going on, and my guess is that it's either an overset pin or an underset pin. My money's on overset.
But really... you should have better tools to learn with. I promise that will help. After that, look for the "beginner lockpicking exercise" at the top of the PickFu section of this site.
That'll make a big difference too.
Good luck, and happy picking!
db
P.S. Sorry I took so long to respond.
