Realistic expectatios are essential. The surgery can improve the appearance or correct a physical problem, but it will not solve personal problemas. Facial surgery, for instance, will not give you a complete new face, but a very rejuvenated one.
Any person looking for a radical transformation, becoming totally different, has expectations which go beyond what plastic surgery can provide.
The objective of the plastic surgery is to restore the function, improve the appearance and improve the face/body harmony, thus improving selfesteem.
The surgical procedures executed identically, have different reactions on many different individuals. You must expect temporary edemas, skin color changes and other minor discomforts that will disappear depending on the performed surgery. Surgery is not an exact science, not depending only on the surgeon's skills, but also on your age, texture and characterristic of the skin, bone structure and specific needs.