Welcome to the Rabble!
It would really be cheaper (and less taxing) to order "Thrifty" Kilts from www.stillwaterkilts.com About $28 each plus shipping. Call & make sure they have the amount you need in stock. Well made but very cheap and quick delivery (VERY!).
A Kilt , simply put, is a wrap-around garment, knee length, pleated at the back and the two overlapping ends in front are flat/unpleated forming an 'apron'.
But we have lots of experts here, so you'll get lots of help. Good luck.
Front (flat)

Back (Pleated)