You have said yourself that these are your first attempts at panning. Panning, like many other aspects of photography, is a highly skilled process, so nobody would really expect to get a great shot on their first go at it. And, of course, you didn't, either with these or the other one you posted separately. There is no shame in that at all, but there are two elements to this which should have rung warning bells before
you posted on here -
* You took them "yesterday". Photographs should mature, like fine wine, before you even dream of presenting them for public view. It is almost impossible to judge the worth of anything immediately after you have taken it. A few months is pretty much minimum.
* This is your "first time" at a new technique. It is always better to keep anything
new under wraps until you have fully mastered it - even from your girlfriend.
For a successful pan, the background should be blurred of course, but the subject
must be sharp. And you cannot neglect any of the other aspects of good composition in the process, either. That said, I admire you for having a go at it, because I certainly can't pan to save my life
And some of your other pictures have been really great.