First off, defintion comes from diet for the most part. You have two choices, you can either bulk and gain muscle mass along with fat (your bfp will probably go up slightly). The other option is to cut (creating a caloric deficit in order to shoot down your BFP to the desired level).
Second, 3 sets of 30 reps is pretty much a useless setup for gaining muscle mass. You need to concentrate on a rep range under 12. I usually switch it up about every month or so,
8-10 reps for 1 month
4-6 for 1 month
2-4 reps for a month
12-15 rep for a month
It's good to cycle off between doing heavy sets with low reps and light sets with high reps on a monthly basis (you can also change rep schemes every week if you prefer).
Here's a workout you could try
Monday
Bench pressx2 (8-10 reps)
Dipsx3 (10 reps)
Full Squatsx3 (10-20 reps)
SLDLx2 (10-20 reps)
Tuesday
T-bar rowsx3 (8-10 reps)
Shoulder pressx2 (8-20 reps)
Shoulder shrugsx3 (10-20 reps)
Barbell Curlsx2
Thursday
Incline DB pressx2 (8-10 reps)
Flat DB pressx2 (8-10 reps)
DB lungesx3 (10-20 reps)
Leg Curlsx3 (" ")
Friday
Wide Grip chinsx3 (as many as possible)
Curl Grip chinsx3 (" ")
Standing curlsx2
