meticulous (
http://definr.com/meticulous)
adj 1: marked by precise accordance with details; "was worryingly
meticulous about trivial details"; "punctilious in his
attention to rules of etiquette" [syn:
punctilious]
2: marked by extreme care in treatment of details; "a
meticulous craftsman"; "almost worryingly meticulous in
his business formalities" [syn:
picky]