Govardhana Krishna With Cow - Brass Murti - 9" Inch

“If one offers Me with love and devotion a leaf, a flower, fruit or water, I will accept it.” The Lord accepts the offerings of devotees because of their transcendental love. Because they are in love with the Supreme Lord, they do not eat anything without offering it first to the Lord. The Lord does not hanker for a small leaf or flower; He has enough to eat. Indeed, He is feeding all living entities. Nonetheless, because He is very merciful and is bhakta-vatsala, very favorable to the devotees, He certainly eats whatever they offer Him with love and devotion." Srila Prabhupada Purport.

Generally Murti's are already formed with clothing crowns, and Deities we worship by dressing them with outfits, crowns and Jewelry Etc. Generally Deities worship is regulated  where a murti may be more informal worship. Though you may also do the same for Murti's if it is possible. 

"He (Druva Maharaja) concentrated his mind onthearcā-vigraha,the worshipableDeityoftheLord, which exactly representsthe SupremeLord, and thus thinking constantlyof thatDeity, he became absorbed in trance. Worshipofthe arcā-vigraha is not idol worship.Thearcā-vigraha is an incarnationoftheLord in aform appreciable by a devotee. Therefore devotees engage inthe temple inthe serviceoftheLord asarcā-vigraha, aform madeofsthūla (material) objects such as stone, metal, wood, jewels or paint. Allof theseare calledsthūla, or physical representations. Sincethe devotees followthe regulative principlesof worship, even thoughtheLord is there in His physicalform, He isnondifferent from His original, spiritualform. Thusthe devotee getsthe benefitof achievingthe ultimate goalof life, that is to say, becoming always absorbed in thoughtoftheLord. This incessant thoughtoftheLord, as prescribed intheBhagavad-gītā, makes onethe topmostyogī."      Srimad Bhagavatam 4.12.17 Srila Prabhupada purport.