The most important thing when purchasing an off the rack suit is to be sure the shoulder and thigh fit is perfect. Most tailors and seamstresses cannot make adjustments to these areas because there is no extra cloth to work with. Areas like the waist size, lower leg, and cuff length are less important because there are many alterations that can be done to adjust these areas.
So to achieve that custom look without emptying your wallet, consider the following:
First on the pants -