The only part that's the least bit tricky is making the loop at the top of the headpin to attach it to the earring finding (the post or kidney wire or french wire, or whatever you use). Needlenose pliers will make it very difficult to get a loop small enough and rounded -- you really ought to get roundnose jewelry pliers with tips that are tiny and conical in shape, like these on the Fire Mountain Gems site:http://www.firemountaingems.com/deta...p?PN=H201605TL
One caution: please don't get your pliers at Wal-Mart. My first pliers were the kind Wal-Mart carries, and they were so bad that they made me think I was a clumsy ox! It was amazing how much more talented I became when I got hold of some good ones!
Your roundnose pliers are your right hand, especially in making earrings, and reasonably good ones can be had at any craft store for not more than $12. (Eventually, you'll want a good flush-cutter, too, but for now, you can get by with the hardware-type wirecutter you probably already have.)
Nice to have another beader aboard!
EDIT: Oh heck drat, I see you have nothing but Wal-Mart. Maybe you can order some online...?