The song I sent last week (Written In The Stars) had a new chord G Major. Please continue to work on this, use the drawing to work out where your fingers need to be placed. To help with achieving this chord, I have sent a link to a YouTube clip.
It has the chords Am, C, F & G major. You play 8 strums on each chord and it shows you when to change chord. You repeat this, each time gradually getting faster.