You think you're oh so clever, that OMGITMUSTBEACONSPIRACY!!! Never stopped to consider that what you're seeing are normal differences in apparent color do to lighting. I get it, you're blind. Either that, or your monitor was made in 1986. Either way, the first picture very clearly shows two crease lines, and even a hint of the actual bluish color of the document. The last picture is a cropping and blow up of the first. The signature stamp does not appear on the first because it is on the reverse of the certificate. Tell you what, save the picture to your hard drive, and open it with paint, and view it at full size. The creases are extremely clear. I'll even highlight it for you here.
Shows the creases in the paper. Notice the edge of the paper does not maintain a straight line, and instead exhibits a clear elbow, indicating a crease. Notice that the crease goes outward from the front of the document, indicating that the top 1/3 folds to the back.
Shows crease lines on either side of the state seal. A clear line of discoloration also appears through the seal, indicating a crease. Compare to the close up of the 3-D seal. The location of the crease is perfectly consistent with that seen in the first picture, as well as the direction of the crease, which shows that the picture is being viewed from the back, where the 3 dimensional aspect is most easily seen in photograph because of the ink on the front of the document.
This one
Discoloration in photograph reveals bluish color of document despite poor lighting masking the color otherwise.