Make your gym routine to about 3 times a week. That way its not too intense and its just about achievable
Don’t do much weights for now….so you won’t gain much muscle and you will lose calories.

Next…Try something to increase your metabolism. The best i’ve found so far has been white tea and a combination of acai… coz its got tons more antioxidants than green tea and leads to higher metabolism levels. I got a free pack from I don’t know if they have any packs left.

Don’t worry too much about your diet…as long as u keep up the exercise schedule and drink white tea 2 or 3 times a day you should start seeing results in 2 weeks tops.
White tea will help suppress your appetite so it will naturally help you keep overeating in check.

Now for your definition…by which i assume you mean weight loss and weight gain in the right areas….this is all about naturally losing the fat content first and then building up your frame. Once you start going to the gym..whatever you do..the fats will always go from the heavy areas…and after 2 months or so..when you are ready to gain muscle ..you can work the right areas!

Hope I helped!