Good Tutorial, I would like to add the crystal does have a specific orientation. You can see pin one on the crystal in marked by the white circle (that iv'e circled in red) as it is with every chip on the board.

Your more than welcome to put that in the tutorial or modify it if you like. I just pulled it out of the data sheet and modified it in paint. A few other things, data sheet for crystal shows max re-flow temps around 260*C for 10 seconds (Personally I use around 290*C but I'm not a patient person   ) 380*C seems a bit high. Here is the data sheet for the brand I used: http://www.abracon.com/Oscillators/ASFL1.pdf look at the very bottom under "Reflow Profile". Thanks for putting the time into doing this I'm sure lots of people will appreciate it.

Edit: Also your links at the beginning aren't working so I don't know what solder paste you linked to but leaded is easier to work with if your a beginner. I'm cheap so I actually just used regular solder, solder paste has a shelf life so I don't tend to keep it around unless I have a project going.