you need to provide examples of the learning you have done, which means you also need to provide references. This is an example of how to do it:
I learnt a lot of new vocabulary. For instance, in task 5 I used ‘elephant’ for the first time in “There are many elephants in Africa and India” (Mizuno, 2018a). Regarding grammar, I learnt about adjective order, which I recently used in task 10. For instance, “The new American iPhones are very nice” (Mizuno, 2018b)
Mizuno, Y. (2018a) Task 5: The things in Africa.
Mizuno, Y. (2018b) Task 10: Japanese vs. American technologies.