@ValentineMoonBabe Absolutely brilliant- it is such a clever idea to print out the grid and attach it to the bottom of a candle dish! 
Not to mention that it looks so neat and tidy too- I think this is a great enhancement for crystal grid work 
There’s a lot to crystals grids, so I’ll hand you over the experts, Mary! @Christina4 shared a really helpful guide about Creating Crystal Grids with lots of background information about how and why they work- hopefully the guide can help answer your questions! 
And if you’re interested in crystal grids, I know of one in particular you may enjoy 
Here’s a Crystal Grid for Jupiter 
!