I guess the set of springs you purchased did not come with any instructions... here are a couple of links I used to help me install my springs, the first instructions are for TRD springs on the xD, the second is for Tanabe springs on a Yaris, which is basically the same thing:
http://www.trdsparks.com/install/PTR11-52081inst.pdf
http://www.yarisworld.com/forums/showthread.php?t=1096
And OOPS - You need a 17mm offset wrench for the top nut of the struts, not a 19mm - my bad!