眼高手低

to have high standards but little ability / to be fastidious but incompetent (idiom)

hand / (formal) to hold / person engaged in certain types of work / person skilled in certain types of work / personal(ly) / convenient / classifier for skill / CL:雙|双[shuang1],隻|只[zhi1]

surname Gao

high / tall / above average / loud / your (honorific)

eye / small hole / crux (of a matter) / CL:隻|只[zhi1],雙|双[shuang1] / classifier for big hollow things (wells, stoves, pots etc)

low / beneath / to lower (one's head) / to let droop / to hang down / to incline

expert / past master / dab hand

haughty / contemptuous / to have high expectations