Mine looked like that for a while, but it takes a lot of practice to get them smooth. I have a few points of advice:
1. As someone already said, Don't forget to breath! You will concentrate better with oxygen in your brain.
2. Practice on scraps, so if you mess them up, you throw them out and nothing was lost. Make sure you have 3 layers to practice. When you get the tension right, it may vary if you don't use 3 layers.
3. Do FMQ on your quilt, with floral or printed fabrics. Don't do solids until you are confident of your technique. If you make a mistake the fabric will hide it.
4. Set the stitch length of your machine to a very low number. If your machine is computarized, try with a 1.0 or 1.5. With a large stitch you are moving your hands while the machine is waiting for when is time to come down again and that is how you get jerky looking stitches.
5. Set the speed of the machine to as fast as you can handle. Remember that you control the stitches, not the machine.
6. If you can, lower your feed dogs. It will make the movements smoother. If you can't, cover them with tape, leaving only a small opening for the bobbin thread to come up.
7. At curves, you will avoid the eye lashes by slowing down.
8. Play around with the tension until you get the right one. When you do write it down so you don't have to do it again the next time.
9. Don't look at what you already did while the machine is still running. You have a lot to concentrate on while FMQ. You have to plan the next curve, where to go next, the speed you are moving at, and if you look back, you will get distracted.
10. The general rule is not to cross lines while stippling, but if you do, who cares! Is your quilt and you do as you please. Concentrate on having fun, and the more "mistakes" you make, the more personalized it is.
11. On a quilt to be used and washed, some of those imperfections will dissapear after the quilt is washed a few times. The batting flufs, the fabric and threads will shrik a little, and your quilt will look antiqued. One of my first FMQ looked awful at first, but after washed I love it and now is my favorite quilt.
12. It is easier to do if your machine is sunk in a well (sewing table) or if you have a smooth surface at the same level of the sewing machine's bed. I saw someone one made out of Fedex boxes and it was just perfect.
Keep on practicing. I can see you will be making perfect stitches in no time.
Maria