You can get chiseled abs, shaped legs and toned arms by increasing your lean body mass and decreasing the percentage of fat in your body. In order to do so, you need to work the major muscle groups in your body.
These would include thighs, hamstrings, shoulders, abdominals, arms, back and chest. Find out some home gyms that work as many different muscle groups as possible. Try and burn more calories than you eat. Any little activity like even walking up and down the stairs or vacuuming the carpet help to burn calories resulting in a loss of fat. Your hidden muscles can be seen clearly only after you lose the excess body fat.