Absolutely agree with Oh vair oh. Your best bet is to find a trainer to help you out here - your horse needs to be taught to move properly so she can naturally put herself in frame. We can't teach you how to do that over the internet, unfortunately.
I assume "tip her nose" is referring to what is more often called "softening" or "giving" to the bit. You can likely Youtube some DIY videos on that topic, but unless the body is properly positioned, you will not have the whole package for the show ring - a headset does not equal collection/frame.
Training forks are not designed to create a headset, nor to keep a head down or tucked, they are meant to prevent a horse from raising his head so high he evades the bit. When used correctly, it will have no pressure on the horse at all while the horse is working normally, it's just there as a preventative measure.