So this is my first Chord tab. this is how i play it, it seems to work and a pretty good crowd pleaser. i did do this by ear, so feel free to correct me if you actually know the proper chords. The strumming pattern i use changes throughout the song. for the into i use half a bar of music per chord and then during the verse i change to 1 chord per bar of music . The chorus is again a little different but you will see that in the write up. Carrie Underwood All-American Girl Tuning: Standard (guitaretab.com)