I have never starched pieces before sewing them, bias or straight edge. I have been quilting for over 20 yrs. I guess I am a renigade...I don't use "glue" on anything either. Oh, I also do not wash my fabric...if I suspect a bleeder, I will cut off a piece put in cup of HOt WATER and watch....if no dye run, it is good to go........if run, do not use it at all.....will replace with something else........I don't make many quilts with navy blue or red for the dye run probability.....
I simply take my time piecing, using pins if I feel it necessary, use a stiletto a lot to hold things in place before it reaches the needle...so far so good!!!