assalamualikum brother this is jus a advice as u said it is difficult for you to stop drawings of anim, you knw wat, i used to do,whenever i made them i ask my friend or some one to distroy them in front of me n that thing i cant bear.so i stopped drawing only coz we cant see our precious thing to be distroyed.jus try it once,slowly inshallah you will also able to do,hope inshallah it will help.
wassalam