Breakdown of Ako želiš ući u ostavu, prvo otvori onaj mali ormarić pokraj hladnjaka.
Questions & Answers about Ako želiš ući u ostavu, prvo otvori onaj mali ormarić pokraj hladnjaka.
Croatian often drops subject pronouns because the verb ending already shows who the subject is.
- želiš = you want
- otvori = open! addressed to you (singular)
So ti is not necessary here. You could add ti for emphasis, but the neutral version usually leaves it out.
Želiš is the 2nd person singular form of željeti/htjeti in the sense of to want here.
- ja želim = I want
- ti želiš = you want
- on/ona želi = he/she wants
Since the sentence is speaking to one person, želiš is the correct form.