That’s a great drill for newbie.
Once you start doing great grouping in all distances, make it a warmup procedure and advance to “dot drill”:
1 inch circles, 5 in the raw, 5 raws (25 dots). Distance - 4 yards
1st and 2nd raws: single shot per circle from compressed ready
3rd and 4th raws: 3 shots per circle from compressed ready (try to be within 5 - 6 seconds per circle)
5th raw: single shot per circle from the holster.
This drill verifies all shooting fundamentals.