Exercise professionals needed!

Letters24You

Hi all!
After losing my first 40lbs and finally fitting in (and I use that term loosely) to my goal dress I knew I had to start incorporating some workouts. I have a very small spare room that I've been utilizing and had the hubby take a before picture last month, focusing mainly on my back and shoulders. After 1 month, today, I took an "after" picture and saw absolutely no difference. Thus I come here to those who have more experience in the workout world. Below are what I've been able to do in the area I have, each week upping my reps.
Any suggestions would be greatly appreciated. Keep going? New exercises? Up my weights? What's a girl to do...

2lb weights...
Push Ups - 3 sets of 20
Skull Crushers - 3 sets of 20
Bicep Curls - 3 sets of 20
Triceps - 3 sets of 20
Standing Rows - 3 sets of 20
Lateral Raise - 3 sets of 15
Front Raise - 3 sets of 15
Squats - 3 sets of 15
Bridge - 3 sets of 20
Crunches - 3 sets of 15
Oblique Crunches - 3 sets of 10 (both sides)
Punches - 60 Seconds
Standing Calf Raises - 3 sets of 20

Thanks all!