General ACCAAcca Membership and practice Certificates

Hi every body, Hope you all doing well, i just applied for ACCA membership. Currently i am working in an accountancy practice firm and i am interested to have my own accountancy practice in near future. I just want to know that do i need to apply for a practice certificate separately or one membership application is sufficient? Secondly i passed audit paper and interested to have audit certificate as well. My question is that do i need to have separate application for practice and audit certificates? and do i need to have experience in audit before in order to be eligible to apply for ACCA audit certificate? Secondly can i apply for above mentioned certificates later on? because i just looked at the ACCA website and they are asking for £450/- fee for such certificates. Kindly guide me as well how to apply for these certificates because i could not find any link on ACCA website to apply for such certificates. Many Thanks, S. Rashid Iqbal