I am sure your sister will love this .
In my interpretation , the first scene shows not only how others can make us happy , but also how we have the desire to make others happy . We are united by love ... and cheese . Mainly cheese .
Also , what is most beautiful about fanart toward a person , is that it comes from others' appriciation for you , as you are an ispiration for them . Just look at how diverse the skill level of their art is ; people throughout their journey celebrate you .
P.E. I am sorry , but the afterimages on the first scene makes it look like they are on bullet time XD