How I make bias strips
1) After straightening the fabric. I fold it (so I get more strips). Then I lay it square along my cutting grid and draw a straight line that runs carefully through the 45 degree angle line.
2) Then I lay a gridded ruler carefully and precisely along that line. I move the ruler up however many inches I want the width of my bias strip to be.
3) The farthest edges come out with a little triangular bulge. If it's important to have the print in the same direction, then I'll snip the two ends off after I seam these two together.
4) But if I don't care how the print comes out. I can match up the two ends, by flipping one strip the other way. After I sew that seam, I'll snip the ends off to the right of the seam line.