In descriptive writing, your main point conveys the main impression you want your readers to see.
Take another look at the paragraph in “Understand What Description Is.” What if the topic sentence had been
I love Nojoqui Falls.
You would not know why the writer likes the place. But the actual topic sentence conveys a main impression of the falls and lets you know why this place is important to the writer.
Nojoqui Falls is a special place to me because its beauty provides a break from human worries.
This statement provides a preview of what is to come, helping the audience read and understand the description.
The thesis statement in description essays typically includes the topic and the main impression about it that the writer wants to convey.