Please those who know, as in the example

I think that Angelina Jolie is taller than Kristen Stewart. But Keira Knightley is the tallest.

Gerard Piqué is shorter than zlatan ibrahimovic, and Arjen Robben is the shortest football player.

I think that Kristen Stewart is more beautiful than Keira Knightley. But Angelina Jolie is the most beautiful actress.

In my opinion, Zlatan Ibrahimovic is better than Argen Robben. But Gerard Piqué is the best football player.

From my point of view, Kristen Stewart has a worse haircut than Keira Knightley. But Gerard Piqué has the worst haircut.

Zlatan Ibrahimovic is younger than Keira Knightley, and Kristen Stewart is the youngest.

Keira Knightley has longer hair than Kristen Stewart. But Angelina Jolie has the longest one.

Explanation:  

To make Comparative sentences, we have to write the subject, then the adjective, the word than, and the other object or person. If the adjective is short, we add to it the suffix -er, but if it has more than three syllables, like beautiful, we write the word more before the adjective without -er. For example, Angelina is more beautiful than Kristen.

To write Superlative sentences, which are sentences where we do not compare subjects, but we state that one is superior. We write the subject and the adjective with the suffix -est. If the adjective is long, has more than three syllables, we use the phrase the most before the adjective. For example, Pique is the most beautiful football player.

The adjectives good and bad change when we write sentences in comparative and superlative. Good in comparative becomes better and in superlative best. Bad becomes worse and in superlative worst.

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explanation: