1.
This vivid mental image.
4.
This simple piece of advice.
5.
This simple piece of advice.
10.
I wonder what this is going to be.
11.
This plaintive message.
14.
This request, softened by the inclusion of hearts.
15.
This statement which would be useful to keep about one's person at all times.
16.
This penguin compliment.
18.
This lovely sentiment.
20.
"This is for my aunt on her birthday."
21.
And last on the list, the best on the list.