Thank you all. You guys are great.
Nothing like extra brains to think with you
I used the interfacing without the glue ( But the tip about the glue stick is fabulous..I will use this trick!).
I cut the waistband and interface together, same size. After that was easy. I folded in half (width) and connected to the skirt, with help of some pins.
I am almost done with the skirt...I just need to buy a zipper...and that my friends will be my real challenge. I hope the Force will be with me. ha ha.
See you all until my next question..probably about the zipper ha ha.