I made two pictures of this square and than I tried to put them together with photoshop to create a panorama photo. As you can see te result isn't very great, but what do I have to do to suceed in situations like this?
It's a really hard theme, because of lot of small details, the composition chosed by you demands hours of concentrated work. Try another not such a detailed theme first. For the removing of the white line 3-4 methods, the much easyer with the correcting stamp and bleaching in 7.0. Don't give up! Try another, easyer variations, like this:
I have often approached this by creating a small collage. That is, defeat the problem of hiding the overlapping photos by not hiding them at all and mounting the photos togeter in a cubistic way. I love this method. I first encountered it in the work of David Hockney, a painter who's paintings I do not love very much but who's photos have been very inspirational to me as a photographer. He started with polaroid collages and also has some 35mm ones. His book "The Way I See It" has a lot of examples of this style. It was ripped off my numerous comercial artists in the late 90s and what was a style became a gimmic. (That is to say, I was mad because I felt much cooler when I was the only one I knew ripping him off.)
The other, more obvious choice is back up, get a lot more sky than you want and then crop it out, but that has a lot of clear disadvantages.
I'll agree with Becky that this is a hard subject choice for doing it the way you have because the two churches look alike. I think that many people would take this to be a flipped negative used to make a mirror image. (I am lucky enough, however, tolive in Rome and pass through this piazza regularly.)
The best way to get rid of that white line is to use the clone stamp tool, which is on your tool bar, or just hit "S" on your keyboard. Place the circle slightly to the left or right of the line, hold down the Alt button and left-click the mouse. Then paint over the line. It takes a bit to get used to . . .
The new photo is definitely an improvement. The building on the left looks great now that it's not leaning as much. Good luck with the line. :)
Thanks for the advise Becky. I've already been working at the one degree turn, that wasn't to hard to find out, but I have bigger problems whit removing the white line. I work whit photoshop 7.0 but I don't feel at home yet in the system. But thanks for the constructive comment and take a look at the improvement!
Ah - the "poor man's panoramic" (that's what I like to call it). I do this quite often and sometimes it works well, other times it doesn't. I don't think this is a bad attempt at all.
First of all, if these two buildings are not side-by-side, then you did a good job of finding a point to connect the two photos together. If the left half of the photo was rotated one degree to the right and the small white "seam" was eliminated, I wouldn't be able to tell this was a composite at all.
If these two buildings are not side-by-side, would it be possible to put a little more space between the two? Because the buildings look so similar, this photo almost looks like a mirror image, which looks slightly unnatural to the eye.
0 
