i have made turning 20's with 20 fq's of 5 fabrics (1 yd pieces) it turned out very nice- i liked it alot better than the one with 20 different fabrics- the one with 20 different was just too (busy-hodge-podge) for my taste- the one with only 5 different fabrics had a much nicer design (to me) and the person i gave it to loved it!
you can use what ever you like it's yours.