Before going to the sentence, let's first know the definition of "aquarelle" is that it is a type of watercolor or a painting method that makes use of watercolor that is put in a stencil and used to create different kinds of paintings. So a sentence with aquarelle in a sentence could be, "Jake is such an amazing artist. After I saw the aquarelle painting that Jake did for our living room, I was convinced that he has the makings of a great painter.