Any suggestions for my artwork? will reward best answer :D?

Im in the 8th grade, and im an artist (not proffesionly tho lol), i just love drawing, painting, using oil pastels, and just creating art! im actually trying to get into a school called charleston county school of the arts, its in SC. ever heard of it? well i rlly hope 2 get in for my freshman year, i would love to be able to spend my high school years there. But NEED SOME INSPIRATION! i think im having a "artists block", i have to create 7 pieces for my portfolio, but need some ideas, ive made 3 pieces, two of them i am very staisfied and cofiident with, but the other is not my BEST work. I have to at least have one landscape, a portrait, and a still-life. dont get me wrong, i know that i can draw simple things like flowers, lamps, and trees, but i rlly want to impress this school, i made 2 portraits, one of my father who has ped, so its special, and one of my grandparents, who have also ped. i need some more ideas, so please suggest your most creative, neat, fun thoughts even if u think there stupid, i need some, thanku! :)