I sew the 2 sections together first with a BIG--prolly about an inch seam. Then I trim it off.
This did cross my mind. I think it would be easier to cut after the sewing.
I did one 4 yard length that was plaid.. and used my scissors and cut on one of the stripes of the plaid (used that as a line to follow and cut on) That worked pretty good
Now I have to do 2 more lengths of solid fabric.. so there will not be a line to follow. Unless I draw one like Bree123 suggested