Well, to draw cat cartoon eyes, first, outline the basic shape. Make them big and roundish. Add a shine in the center of the pupil and some eyelashes for a cute effect. Also, think about the expression you want the cat to have and adjust the shape accordingly.
Well, it could be in various places depending on the cartoon. Maybe it's in a house, a garden, or even a magical world. Hard to say for sure without more context.
First, you need to have a clear idea of the cat's appearance and personality. Then, start sketching the basic shape and features. Add details like fur texture and expressions.