Switch out images within activities on online teacher material creation account

This project involves approximately 6 hours of work per week for five weeks. You will be provided with a 10 minute training video and support materials. I will also be available for questions. The program within the account is actually quite simple. Once you have worked on it for a short time you will get the hang of it. There are activities set up on the account you have access to. The title of each names a particular sound in english (eg. "sh") - these activities are for working with children who have speech difficulties. There are 12 games within each activity - each game has 16 cards. You need to double-click each card to replace that card with one from the library provided to match the sound in the title (eg. "sh"). I have done this for awhile and it typically takes just less than 20 minutes to complete 1 activity. There are 18 activities (with 12 games each) which therefore should take about 6 hours to complete. I am willing to pay $10 an hour for careful error-free work. Each week for five weeks I will post (Monday or Tuesday) another 18 activities from a different theme. So, that's 6 hours a week for 5 weeks = $300 USD total. I would like the work done each week by the end of the day on Friday. I would like to pay out $60 USD each week as the work for that week is done. Error-free, careful work. There is the possibility this project may run for 2 additional weeks if work is done well.