Thank you card

I made this cute little thank you card for my inlaws. I used the create a critter cart from the cricut library. I love that cartridge. The cuts are so easy to assemble! I've seen these stamps called peachy keen stamps and there on the top of my christmas list this year. There stamps for the faces for all the characters on this cart. They also have stamps for the mini monsters cart that I want too. Gotta save my pennies and be good for santa!!! Anyone out there that has these stamps that can give me advice on what sizes are good to get for card making would be greatly appreciated!!!