Quote Originally Posted by The F-H.C.A.G. View Post
I don't think I'll be able to do much more today, so anyone who reads this and sees a glaring calculation error-please let me know! Once I start ripping fabric, I can't go back!
I'm guessing all your calculations are based on hip (or "rump") measurements. In that case, 11 reveals of 2.75 each is 30.25 inches, plus the 10-inch apron makes 40.25 inches total. That should still give you enough for the seam allowances. Don't forget seam allowances for the apron edges, too.

One word of caution: Ripping 3-inch strips of tartan can be dicey. Even if it doesn't go sideways on you, you'd still lose threads from the ripped edges which you need for the seam allowances. [deep voice] This case calls for scissors, Doctor.

(p.s. Irreplaceable tartan? Nahh. Squeeze out more just by cutting Panache's caloric intake so his XMarks kilt can be made smaller from his 4-yard tartan order. )