After positioning the shower back and forth for I dunno how many times, it finally in place. Let's see what went wrong: Walls were to small, so I had to make it wider. Shower had to be raised, the drain connection sticks out an inch higher. And I forgot to place a support backing for the shower handle! (DoH!) For the rest, 2 more layers of joint compound needs to be applied and then primer paint can be put on. There are 3 doors that needs to be put up too and a closet door. Slowly but surely it will be done. Hopefully before William's Birthday, so we can have it there!
This is a video capture of the little munchkin using his flappers;)

I have been working on my basement during my parental leave. Hopefully I can get most of it done before I go back to work. And I hope it will be ready by William's birthday. :) What was needed:120 2x4's, 6 2x4x12, 8 2x4x1016 2x2's400 3" nails 65 2.5" power nails 120 2.5" wood screws 1 large roll of 6mm vapor barrier 6 large bags of R12 insulation 40 drywalls 2000 drywall screws 260' 14/2 NMD wire 100' 12/2 NMD wire 36' of copper pipe 2 doors1 shower 1 toilet & sink1.5 bruised thumb 1 helpful hand from my wife :)