Ok here it goes :
OLD well worn well loved lingerie
Seam ripper (you might want a flat one not curved)
YOU can substitute a exact o knife but i find that makes a lot of holes
Newspaper Pen/pencil/w.e. you can draw on paper with
CAREFULLY disassemble your underpinnings and keep them in little zip loc bas so as to not loose pieces.
2.Now lay your pices out on newspaper tape them down.
3.TRACE!!! (Add seam allowances a bit more then what you intend for mistakes sake)
4. Cut out!!
5. Reassemble your new fashioned garment! ( you can use the notions form the bra / panties your dissembled or buy new ones)
6. if you followed this correctly you have made your first set of lingerie with matching panties!
May I suggest a matching garter? : D