Answer:
carte blanche
Explanation:
The meaning of carte blanche is total freedom to do what you want, or what you think is best. So, since he was so famous, they let him have complete control on how to design the mural.
Hope this helps!
Explanation:
I don't think that people say 'persons', because that's grammatically incorrect. But sometimes you would see the word 'person', because 'person' points to one person(Singular), and people points to mutiple people(Plural).
I hope this helps:D
You could use a topic such as "2 common breeds of dogs and their characteristics" or "How to raise a tomato plant from seed" or "Critical tips for surviving in the wilderness", etc. (Basically, you need to do it on a topic you are familiar with and interested in)