How to put dots in rangoli

If we take more rangoli powder dots are thick and some times look like small lines.  When we join them with lines , they are not covered entirely by the lines

The gap between 2 dots should be uniform to the extent possible

 When we place a dot grid , for example  for 7 to 4 dot grid, place the 7 dots first and then the remaining dots above and below for better symmetry.