Work on your abs and obliques with these core exercises for women. A 30 minute waist cinching workout to activate your obliques and define your waistline! http://www.spotebi.com/workout-routines/core-exercises-for-women-abs-obliques-workout/
For any of the standard push ups listed in the workouts, this is the way I will be doing them. You can always start on your knees and work your way up to this for a more total body workout. I think I could do these.