those planets are way too big. earth there is roughly the size of saturn compared to the sun. mercury is about right compared to earth, but earth and venus are almost the same size. sorry to shit on you like that. it's just that i spent roughly half an hour doing exactly this (only just in a liiiiiittle (A LOT) more detail, kupier belt, oort cloud, rings, moons, comets and geographical features, all to scale in a single techsoft 2d design document)...