I used this way
But after some time, I had an great, worthy of a lazy idea, that I do not want to partition my SD again and again after reflashing, breaking Android etc., formatting card, only dd-ing Maemo Leste and unpacking NITdroid to MMC.
However, it might be better, in terms of speed - SDHC/XC (N900 supports XC?) over MMC, and more disk space (/home partition is small until you partition it also).
However, thanks for nice tutorial and for mentioning me