anyone here has any tips on how to frame ppl?? i tend to frame ppl like mostly half body, or sometimes missing the legs till the knees, etc

If i put full bodyinto frame then the pic looks kinda weird too..... Anyone ?? I also have the tendancy to frame ppl to the side (either left or right) with some backgorund on the left...if there is no background, then yup i just frame them in middle.....but mostly missing legs.....how many percent of a person should we put inside??