30 March 2017 Last updated at 22:18 BST
But amateur artist Emanuel Santos, who works at Madeira airport where the bust was unveiled, says he feels hurt by the criticism his work has received.

The former "It Girl" and reality TV star said she began receiving treatment in January for a non-malignant growth in her pituitary gland.
Ms Palmer-Tomkinson, 44, told the Daily Mail: "I got terribly frightened. I started thinking, 'I'm going to die.'"
The tumour has been successfully reduced by the treatment, she said.
Ms Palmer-Tomkinson said the tumour was discovered after she went for blood tests after feeling ill in the summer of 2015.
She said: "'I actually feel very lucky. My growth was non-malignant but it affected the production of prolactin. I've been with people who have malignant brain tumours so I don't want to be like, 'Hey look at me'.
"I have been - touch wood - luckier. I've taken medication and, thankfully, it seems to have gone away for now."
The pituitary is a pea-sized gland on the underside of the brain which controls the release of hormones in the body.
A prolactinoma is normally a benign, slow-growing tumour in the pituitary gland, but its effect on the secretion of the hormone prolactin can cause infertility.
Ms Palmer-Tomkinson was also diagnosed with an auto-immune condition, which causes tiredness, joint pain and acute anaemia.
Having been treated for cocaine addiction in the past, she has criticised media coverage which had blamed her frailty on drugs.
"That's always their take on it... cocaine. That was so many years ago. But not many people can contemplate Tara's life without it," she said.

The League One champions have confirmed Leon Barnett, Ryan Jennings, Kevin McNaughton and Reece Wabara will be allowed to exit.
Midfielders Chris McCann and Jordan Flores are offered new deals.
Emyr Huws, Jack Hendry, Billy Mckay, Andrew Taylor, Dan Lavercombe and Danny Whitehead have all been out on loan but will return for pre-season.
A bronze bust of Cristiano Ronaldo has made headlines around the world for its lack of resemblance to the Real Madrid star.
[NEXT_CONCEPT]
Socialite Tara Palmer-Tomkinson has revealed that she feared she was going to die when she learned she had a brain tumour.
[NEXT_CONCEPT]
Wigan Athletic have announced that four players will leave the club when their contracts expire during the summer.