Correct sentence: My paws are like spades. I dig long tunnels to find yummy worms!
Why this is correct (explained for a 7‑year‑old):
- Starts with big letters: Each sentence begins with a capital letter: “My” and “I.”
- Punctuation: The first sentence ends with a period (.) and the second ends with an exclamation mark (!) to show excitement. That is fine.
- Simple comparison: "like spades" is a correct simile — it compares your paws to spades using the word "like."
- Words match: The verbs "are" and "dig" match the subjects (they tell what the paws and I do) and are in the right tense (present tense).
- Friendly word choice: "Yummy" is a great word for a kid to use. If you want a fancier word you could use "delicious," but "yummy" sounds fun.
Small alternative (optional): My paws are like spades. I dig long tunnels to find delicious worms.
But you don’t have to change anything — your original sentences are grammatically correct and sound great!