Welcome to the madness, er, hobby. You really need to provide a lot more info before any of us can provide any guidance on what to purchase. You might post a pic of your house and give us an idea of what you are thinking about putting pixels on, eaves, gables, gutters, outlining, snowflakes, spinners..... Anything in the yard, Mega Tree, Arches, Mini Trees, etc., etc. Once we can see your canvas, we can share some suggestions for the types of add-ons you might need.