Minimal ARM (low-power) circuit design
There is few unclear point to me : 


There is no pull up resistor on the SPI bus line. I know it's not mandatory but some chip require it. 
3.3v is connected to VSS through capacitor C9? (It may not be a mistake but I'm curious) 


A little advice when you edit a schematic : try to keep GND head down and input voltage head up (the arrow to the top). It make the schematic clearer