OK Denise ... so it was a calm day with no wind but nobody has told you why and how you use the delay timer, 10 seconds? , on your camera. Firstly there is a huge magnification from the tiny sensor in the camera to even the image posted here so one has ben be very careful. Secondly even though you think you didn't jolt the camera I am sure you did when you pressed the trigger and as you continued to hold the camera you were vibrating it, just a little bit for sure . So I almost always when using a tripod, and we use them to achieve steadiness, select the 10 second delay option and after carefully pressing the trigger and taking my hand away to give the camera a chance to settle down from the jolt of pressing the trigger. A third point is that I doubt that you have a top-line professional tripod so you will find that raising the centre column is a no-no* and you will get better results if the ballhead or Pan and Tilt head is as low as it will go on the three legs on the tripod ... in some situations you could consider shortening the legs .. strong winds etc.
* I have seen these and few have centre columns ...certainly a message there I think ... I did once have a seven foot tripod for awhile, no centre column
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You probably also have a two second delay on the camera. The theory behind this is that the camera gets the jolt of pressing the trigger and then it and your body settles down and two seconds latter there is no camera movement when the photo is taken ... an idea which is rarely mentioned in these days of Image Stabilisation in cameras. Personally it doesn't work for me but many do find it helps.