a striker is as good has you make them ,so its up to you ,and no one can help you there. if you arnt confident and consistant with your own work a helper cannot help you ,becouse he cannot anticipate your next move,more strikers and any failings on your part leave them unable to work and disjointed, so its team work that makes a good assistant ,let them into your way of thinking ,so they can read your mind ,and you will make strikers that are jems.