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Mini T3.2  assembling instructions for soldering two male headers:

Before soldering all male pins make sure that the module can blink the D13 LED. Test it as you would test a Teensy 3.2,
If it can't, troubleshoot the problem first before going further.

  1.  Parts needed:
 
  1.   One of Mini T3.2 module
    2. .
  2.   Two of 12-pin, right angle, male headers, 0.1" pitch.
  3.  
  2.  Bend the 6 outer pins up.
  3.  Push down the middle 6 pins as much as possible using a flat screwdriver, one at a time.
  4.  The middle 6 pins are all pushed down.
  5.  If you don't push them down, the final assembled module will be like this.  A large gap between the module and the headers.
  6.  Cut down the middle 6 pins to about half length. You can use a 1.2mm PCB as a reference or just estimate how much to cut off.  It does not have to be very accurate.

WARNING:  make sure to wear safety glasses or use a finger to prevent the cut-ff piece flying.
  7.  After cut.
 

8.  The middle 6 pins are shorter.
  9.  Then put the male headers over the module, you can see there are a lot of room to add solder.
  10.  If you don't cut them, the pins are too long and it's harder to solder them to the pads.
  11.  Plug two male headers onto breadboard at 0.4" apart. Make sure it's 0.4" apart, not 0.5" apart.
  12. Place the Mini T3.2 module over two male headers.
Start soldering 2 pins, pin1 and pin13.  Solder pins while pressing down the board.  Once those 2 pins are soldered, check to make sure there is even gap width between the module and the male headers. If not, you still have a chance to correct it.  See the picture below.

Then solder all other remaining pins.
Be careful when soldering as some pins are close to components, don't make solder bridges.

 
  13.  The side view of the above picture.  There should be a very small gap between the module and the male headers.
  14. After soldering all pins on the top side turn over the module.
  15. Solder all 12 pins on the bottom side.
  16. This is the final assembled module.  The middle 6 pins on each side are a bit long, but it still can be plugged into a breadboard. So it's your choice to trim them or not. 
  17. The module is small and there is no room to put all pin names on the top. Without the pin names it's harder for breadboarding.  You can make a 0.8mm PCB as a label sheet.  Gerber files.

BOM,   SCH,   Gerber Files,    Video Clip

 

Mini T3.2  Schematic