photo#1: good subject (interesting: patterns and colours), good focus, good depth of field, and good lighting (highlighting the front edge of the wings and some details in flower centre). only downside is that second antenna is not in view and first is slightly blurr. how close were u to the butterfly and did u have a DOF checker on ur camera?
photo#2: confusing. i know its a bee but do not see one. I only see the fine pollen on its head. and everything else is furry blurry.
photo#3: good focus on the eyes, but thats all. not enuff for an interesting pic. maybe more DOF to include the fine details of the wings. and a closer crop, if fine hi res details is what your photo is about. right now the crop look off as the rear end of the drangonfly is cut.