The comma is good, 'on high quality' is wrong. "And believe me, they are of the highest quality with the prettiest designs in the store."

Hi Giulia, I'm not sure what you are trying to say with some of the words you are using but I'll have a go. For the young people of the sixties, Italian society was instead a country characterised by an authoritarian, clerical, class-ridden state, which enveloped and paralysed the country and needed radical transformation. The involvement of the younger generation suddenly became a new unifying factor, which crossed the divisions of class, culture and origin. Young people became a new and autonomous political movement which took a stance against society and established political parties. This 'declaration of war' established a clear distinction between fathers and sons, between before and after, to which were added the differences in life and culture. Young people, unlike many of their fathers, attended school for many years and lived in a world open to information. With the passing of the years these differences became more entrenched and dug a generational divide far deeper than the physiological one between fathers and sons. The sentences are still too long and, nowadays, you might get criticised for ignoring women (fathers and sons).

Not really. It's a little ambiguous because it could be read as meaning the individual cars themselves are increasing in size. Better to say "The number of cars on the road is increasing". (Note the use of "is" because it's in agreement with the word "number" not "cars").

Cosseters, overhelpers, tiger mums

A Christmas announcement for all you movie fans We will have our meeting, the Movie Discussion Club, tomorrow (25th of December) from ??pm - ??pm We will watch and analyze together some short Xmas movies in English at our center (so don't bother to watch anything beforehand). We have prepared a list of Christmas questions to help start the discussions. As our meeting is taking place on Christmas Day we suggest people bring some snacks and nibbles with them so we can have an informal celebratory dinner. Salads, pizzas, cheesecakes, tangerines etc are welcome. If you are unable to attend, may I take this opportunity to wish you a Merry Christmas and a Prosperous New Year.

If you want to include a reference to modern media culture you could say "You know nothing, Jon Snow." (from Game of Thrones) The advantage of this is that it is quite a jokey reference so you probably wouldn't offend the person you are saying it to. But, if the other person hasn't seen Game of Thrones they might be puzzled ("Who's Jon Snow?").

Not just kids, there are also quite a few famous tennis players who threw tantrums https://www.youtube.com/watch?v=xvAPz3LG-5Y

It's correct. "I wouldn't blame you if you did that" means the person hasn't done the action yet, they are thinking about it.