A simple 5x5 crossword

Question

_{This puzzle is part of the Monthly Topic Challenge #14: Think inside the (very small) box!.}

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A simple crossword:

Across:
1: Mormons, officially
4: Proceed, say
6: Correo _____ (Spanish mail stamp)
8: Spanish 3 + 3
9: Common chess rating

Down:
1: JFK alternative
2: Some deer
3: "Yes _____!"
5: Astronaut Armstrong
7: Bear: sp.

This is my first crossword. It's nothing huge, but I hope you enjoy!

Answer 1

Here is the completed crossword grid: