I was looking for a new Agency in the North when I found this. It has a great section on Self taping which is meant to be for auditions to the Agency (which is very good in itself - I haven't found any others so thorough as yet), but most importantly, it gives fantastic info on how do do a good self tape
https://www.asatalent.co.uk/copy-of-contact
ASA Talent
Moderator: busybusybusy