The shelvs looking crooked is just an optical illusion. I was looking at some one's quilt the other day and it had up and down stripes or some thing of such and it looked small at the top of the picture and when I scrolled down it actually hurt my eyes as it changed as I scrolled. This one kind of does too so it is an optical illusion. I very sure your line or shelves are nice and straight. It's pretty tho. Huggies, Fay