Hand coordination is an area many people find challenging at first. Over time, when muscle memory kicks in, this becomes easier, but the following should help:-

  1. Practice each hand separately at first, taking it slowly and repeat small sections, before joining hands together. 
  2. See the videos in PianoMasterClass section "(Optional) - Extra Help Videos - Detailed Lessons for Amazing Grace"
  3. such as "Both Hands - More Info" which give more info on this.
  4. Here's another video I created to help with this :- https://youtu.be/AKTTOem57Qo