Measure the fullest part of your bust while keeping the measurement tape a bit loose.
Measure it at the natural waistline(where you normally wear bottom)
Measure it around the widest part of hips
Start measuring from the edge of the shoulder and measure down the arm until you have the desired sleeve length.
Measure it from the waist(where you normally wear bottom) downwards along the side to the heel.
Start measuring from one end of the shoulder and measure till the other end until you have the desired shoulder length.