my mistake is doing the wrong one, the hard one so much, and waste a lot of resources, now go back doing them one by one, i changed title and description for those keywords, and also collect a lots of recipes keywords which have plenty of visits.
in the past two month, what i can tell you is the no follow almost dead, only the high PR page could help you a little bit. is not domain PR, is Page PR, even the no follow links, it also helpful, I do recommend SEO Powersuite's spy glass for back links checker. and remember do not doing too much back links, you can try about 15 per day.
I am disappoint about my web design, but feel better about Google Ranking, it seems like I have to do a part-time or full time job to reduce my wife's pressure, my blog still too young. anyway i will continue to rank those keywords one by one, and maybe one day it will beat others