There are many new practitioners who have cast spells before they had the basics and general guidance course instilled into their learning, With out faith. trust, will. and the deep belief in ones abilities cast spells are doomed to failure, or worst they can have a disastrous backlash with potentially dangerous outcomes. I've been a practitioner for over 45 years an even though I specialized in healing I can write and cast spells that work because I have the foundation of the basics, which I look over every once in a while to refresh the memory.
Blessings and peace: