No Contrast, No Cry...

I was rather diappointed when I noticed that there was almost no contrast at all in this image I shot at Sagrada Familia some days ago:

I edited the picture in the following way:

• Straighten the image a little bit: Image > Rotate Canvas > Arbitrary...
• Crop the image with the Crop tool
  
• New Adjustment layers for Contrast and Levels
• Filter Gallery > Fresco (adjusting the Brush size, Brush detail and Texture to my liking)

I'm now thinking that I should have straightened the image even more, because it still seems to be slightly inclined to the left. But, well, I suppose it's acceptable.