Its easier to teach them:
- Emboucbure Placement
- How to breath
- How to get a straight tone
- How to tongue properly
- Sirens to strengthen face muscles and introduce partials. This is probably the most important IMO so they know what it feels like to self correct on partials.
At the same time I do mouthpiece work they are learning how to put the instrument together and hold it/sit with it the right way. After about a week(sometimes two) of training with both components we "graduate" to the full instrument. I make a big deal out of it.
Once they get going playing on the horn I do mouthpiece less and less