Golf Instruction Tip: Best putting drill with cones

Here's a great golf putting drill from PGA pro Adam Glass on practising with purpose on the greens. 

NEW GOLFMAGIC INSTRUCTION SERIES

#1: HOW TO PLAY THE 50-YARD BUNKER SHOT
#2: HOW TO CORRECTLY USE ALIGNMENT STICKS
#3: HOW SHIFTING WEIGHT CAN IMPROVE CLUB PATH
#4: HOW TO USE A HYBRID AROUND THE GREENS
#5: HOW TO GET OUT OF THE BUNKER EVERY TIME
#6: HOW TO IMPROVE PITCHING DISTANCE CONTROL 
#7: HOW TO HIT A DRAW & STOP SHOTS LEAKING RIGHT
#8: HOW TO IMPROVE YOUR CHIPPING & PITCHING
#9: HOW TO KEEP THE BALL LOW 
#10: HOW TO INCREASE DISTANCE
#11: HOW TO PLAY A PLUGGED BALL IN THE SAND
#12: HOW TO HIT A PUNCH SHOT