Bridge in Bruges

Painted this bridge from a photo from my recent trip to Bruges.  I felt that the painting looked great up until I started using my rigger to add detail.  There's a fine balance between suggestive detail and plain overkill.  Had some issues with establishing dark value as well.  I took 2 days on this painting, opting to take my time.  Although my paintings are consistently looking better, there are still many challenges to break through.  Some of my biggest challenges as a beginner with Watercolor:

1). Water and reflections

2). Expressing fine, realistic detail

3). Knowing when to stop

4). Abstracting shapes in the distance

5). Confidence with glazes

Overall, I'm happy with this painting but I see a lot of room for improvement.  With each piece that I do, I learn something.  I ended up going back to this painting several times and tweaking it.  At first, I had to add some very dark green to the water.  This created a nice contrast with the bridge and the building.  After that, something was still wrong with it and I thought a lot about what I could do to improve it.  I ended up working in some black in the tree on the far right in order to frame the bridge and buildings and to create additional contrast.

I feel like I may be overworking my paintings.  I'd love to take a class and get some feedback.  Here's an animated gif of the above painting.  Notice that it looks better prior to adding lots of detail. There seems to be a delicate balance between the need to add some darks to create value across the painting and allowing the paints to tell the story.  :