I put it together just to see how it looked

Then it was the turn of the butt plate so it got marked out and the beak inlet

Then some thickness was planed off the butt stock to make less material to be removed when getting the plate fitted

I forgot to take a pic when I did it but the lever cup was fitted when the butt stock was still in the square

And then the start of some shaping began but the day had been long enough that a rudimentary shape was all I got it to.