Can anyone help me out?

I am having some problems when I try to take pictures of small objects up close. As you may have noticed from some (not so good) pictures I have recently posted, these pictures turn out quite blurry. With my old camera, I never had this problem. Now the camera shows that it's focused and looks good but when I push the shutter button, it goes out of focus and takes a blurry picture. Is there something that I may be doing wrong, or does anyone have a brilliant idea to help me take clearer pictures?