For Australian immigration, first you should complete ACCA and then contact a good consultant for your immigration application. You can fill in the forms and apply yourself as well. Get details here Department of Immigration & Citizenship
For job in UAE, find someone who can sponsor your visit visa and accommodation. You will need to pay visa fee. Visa is valid for 60 days. I am sure there are people on this forum who will help. If free accommodation is not available or you can't pay monthly room rent, then ask your UAE contact to get you in a Pakistani DERA (it is a combined hall where many single people and taxi drivers stay). You will have your bed and each DERA has someone employed who does all laundry, etc. Food you can have outside at cheap restaurants like Karachi Darbar, etc. You can start job hunting from next day. Reading classifieds in Khaleej Times, Gulf News and visiting HR consultants.