Back walkover/handspring

I can easily do a back bend like a back arch, however you want to say it, but anyway, thats easy for me. but when I want to kick over into a back walkover, I cant do it. I want to learn over the summer, and I dont want help from a gymnastics coach because I cant afford one, and besides, I need to learn on my own. how can I be able to do this? I made it for cheerleading, so this will be necessary and I dont want the coaches to be mean to me.

Hope this helps: http://www.wikihow.com/Do-a-Back-Walkover-for-Beginners

Well you said you can do a back bend, is that from a standing position? If so, then try putting one foot on something like a bench or chair and then go into your back arch it should be easier to kick it up, and over. Thats how I learned. Just keep trying. It will come eventually!
Good luck.