You can follow the below steps to apply for an Australia Tourist Visa through ImmiAccount:
Step 1: Create an ImmiAccount by entering your email address and personal details.
Step 2: Use the Visa Finder tool on the Department of Home Affairs website to find the correct visa that matches your circumstances
Step 3: Log in to your ImmiAccount and start a new application
Step 4: Complete the application form
Step 5: Gather and upload all the documents
Step 6: Pay the Application fee
Step 7: Submit your application and schedule your appointment for biometrics
Step 8: Await the process and receive an email about your confirmation