There are many forums about making a wand, many in which have nothing to do with crystal. Try using the search at the top of the page, I am sure you will find what you seek.
Just get the wood, carve it as you feel it should be carved and you're good to go. Crystals are totally optional, it's about what you feel will be the best for your magic.
i'm wanting to buy a particular wand, but i made mine. there's this tree in my yard that's my favourite, i meditated under it one day, then took a dead branch and made it into a wand.