The first time I put the bag under a rigid base for the lining, or between the liner and bag.
This time I was really undecided, or maybe I did not think the fund would serve, or who knows ... maybe I forgot to serve!
So now lining attached to the bag I found that the rigid base was needed. Because I hate to undo
I tried to insert the above basis.
Then using the plastic "bullous" already seen in some previous post I cut out the shape of the bag bottom, I cut two pieces of cloth slightly older, I sewed all around using the zipper foot.
In reality almost always use the fabric from upholstery and then, to make visible the seams I used black thread .... terrible! Much work has been completed then you will not see ..
I did the zig zag cleaning ...
I turned toward the edges in and stopped it all with a hidden seam., Then I pulled up the lining of the bag and the only side left and right have attacked the base with the invisible stitches. .