Not to worry, you haven't done anything wrong
The red garbage icon is available to you just in case you uploaded an incorrect file and need change it before the assignments are sent to your tutor. Once you have uploaded ALL of your assignments for Unit A you will need to push the SUBMIT UNIT A button found at the bottom of the page. Your assignments will be then sent to your tutor, who will mark your work and provide you with audio feedback within 7 business days.
I hope this has helped clarify the submission process a bit! If you have any other questions please feel free to send us an e-mail at firstname.lastname@example.org
Student Support Manager