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Do at least 500 jump ropes everyday. Worked for me.

Create a calorie defict. Eat 500 less calories and/or burn 500 more calories than you currently are to loose 2-4 lbs a week.

Up the intensity of your exercise. Slow walking will directly burn calories but do nothing for afterburning. You'd burn more calories if you ran/jogged/sprinted for a shorter duration but at higher intensity.

2 hour stroll might only burn 600 calories. 1 hour jog is going to burn close to 500-800 during exercise, and then another 500-800 over the next 2-6 hours after you stop exercising.