Check out
THIS SITE. It allows you to pick icons to make a custom slider.
I understand that you already have the ones you want. Either here or at XDA, Brent372 (who made the site) says he'll incorporate other people's icons if you send them to him. He might add your icons, in which case you can use his cab generator. Otherwise, you may be able to figure out how to use yours using his as an example.