This is a beautiful and peaceful way to end the day with your children, whole family or anybody else! I have said this with Toby since he was about 5 and able to read. We sometimes do it as it says, sometimes take it in turns to read the different parts and sometimes I say it all. I suggest starting by doing it as it says and go from there. You might want to light a candle or just use low lighting.
Peace to you!