Self introduction
你好
我叫做丹尼爾。我高興認識你
我係智利人。我四十一歳
我係已婚
我係軟件工程師
我鐘意睇書同睇戲
我鍾意學語言。我識講西班牙文，英文同世界語
我喺亞馬遜返工。我住喺西雅圖

你好&nbsp;
我叫做丹尼爾。我高興認識你 我係智利人。我四十一歳 我係已婚&nbsp; &nbsp;我結左婚 我係軟件工程師 我鐘意睇書同睇戲 我鍾意學語言。我識講西班牙文，英文同世界語 我喺亞馬遜返工。我住喺西雅圖
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Hi, Daniel. Your self introduction is pretty good!
Here is something you can improve,
已婚 is right but it sounds very formal. It would be better if you say&nbsp;我結左婚

Self introduction
你好 我叫做丹尼爾。我高興認識你 (Feel free to use your English name in Cantonese - people who have English names tend to prefer their English names.) 我係智利人。我四十一歳 我係已婚人士 我係軟件工程師 我鐘意睇書同睇戲 我鍾意學語言。我識講西班牙文，英文同世界語（世界語 ﹣ what is this?） 我喺亞馬遜返工。我住喺西雅圖&nbsp;(again, same issue - just use the English equivalents)
 
 Overall, pretty good!

Self introduction
你好 我叫做丹尼爾。(usually you will just say 我叫，，，，佢叫，，，; 叫做refers to sth specific that you wanna emphaise its professional name or nickname.)&nbsp;我高興認識你 (我好開心識到你; 高興 is not commonly used in Cantonese. It is widely used in written form or in mandarin) 我係智利人。我四十一歳 我係已婚 (我結咗婚) 我係軟件工程師 我鐘意睇書同(同埋; 同 AND 同埋 is the same meaning, just give you one more option)睇戲 我鍾意學語言。我識講西班牙文，英文同世界語&nbsp;(what do you mean?) 我喺亞馬遜返工。我住喺西雅圖