Exact. On minute 4’. The piece presented has no measurment. I cut all the pieces, only this one missing. I think I can calculate it measuring the part missing. If it works for me, I will post it here because others might find it useful.

@@isabellegarcia that would be very helful. thank you

I could sew the bag figuring out the missing measurements myself. I am going to try to explain how I proceeded, if that can help others : First of all, besides the missing measurements mentioned by ​@liurabaum8746 , there is one measurement error : At min 3, she presents 2 pcs of 46 * 7 cm (Jeans) + 2 pcs the same size (lining) with a 50 cm long zip. The 7 cm measure is wrong… Way too big. I had to cut the fabric to something closer to 4/5 cm. Sorry I am not being really precise. But you can actually vary this value depending on the depth you want for your bag. Then, to find out the missing measurements of the piece presente at min 4 : - After you have sewed the 46 * 4/5 cm pieces all together with the 50 cm long zip, measure the final width (~4/5 cm * 2 + width of the zipper). This will give you the width of the piece presente at min 4. - Had ~1 cm to find the width of the middle part of that piece. (As you can see, she divided the piece in tree parts, the middle one being larger) - To find out the height, measure the perimeter of the front or back piece of the bag. Substract perimeter - height of the piece presente on min 3 (something between close to 46 cm). Had 2 cm for sewing margins. I hope it is not too confusing to understand. Not easy to explain. Hope it will help you guys.

@@isabellegarcia beginner here, I'm confused.