It takes patience, especially if you haven't worked out in a while. It takes your body about 2 to 3 months to be able to see a substantial difference for all of your efforts.
So keep grinding away! One key thing that you can do is to change your workouts every couple of days to help challenge your body more. The same workouts...will yield the same results.
It' hard to spot train, so keep doing what you are doing and add different workouts and you will be able to see the results that you want.
Hope this helps you!