quiltlady1941

I am making a little baby quilt using 5 inch square and setting them on point. I used the method by MSQC, in her tutorial, Charms on Point. it makes a easy way to set the 5 inch blocks on point, or she said any sized block, I thought it would be easy till I tried to put the borders on, they are wavey...Is there some way to fix this and have everything laying flate. I did allready take off the one blue border, will I have to take off all the borders and start over putting the borders on.. and how do I make the top flate if it isn't?

Thanks so much, I was never good at making a quilt set on point, haha..