Novadays many Young people think that their parents make lotS of mistakes in upbringing(dobre:).They are sure that they will be different in the future.
Some people think that they will PAY more attention TO their children or they will be more liberal(chodzi o dosłowność?? jeśli tak to ok ale ja tego nie łapię) than their parents.
Everybody seeS some disadvantages of their parents (Zgrabniej: "Everybody is aware of their parents' disadvantages") Also I could sign it(również ja mogła bym sie pod tym podpisać) (dorzuciłbym do poprzedniego zdania "including me" albo wogóle bym z tego zrezygnował, bo everyone to także Ty)
FIRSTLY, if I WERE AN adult and HAD children I WOULD let them decide about themselVES, for example they WOULD BE ALLOWED TO to choose THEIR culture or religion.
Secondly, I could let them develop (bez E) their interests. I would do my best to help their dreams come true.
Finally, my children will decide about which (może lepiej WHAT, jako, że zakładasz nieograniczony zbiór mozliwości) school they want TO GO TO(nigdy nie wiem czy ostatnie to jest "na miejscu":) and they will decide about THEIR HIGHER EDUCATION (może zechcą pójść do UNIVERSITY np.),because everybody should decide about their future.
If I WERE AN adult I WOULD take care of my children'S life, but I WOULD not try to impose MY WILL ON them.
If I WERE AN adult I WOULD respect my children'S privacy.
I will (jak cały czas uzywasz trybu warunkowego to się go trzymaj i zmieniaj na would) not SELECT THEIR friends. My children will (jak wyżej - wskazana konsekwencja, resztę zdania widzę następująco) wear clothes and listen to music they like.
I could (co Ty z tym could? WOULD!) let my children makE(!) tatToos or piercing, because I like it too.
I will (konsekwencja) understand if my child will (KONSEKW.) have some problems and I will (...) not make my child sad because of mYSELF (niezgrabne, skończyłbym na SAS albo zamiast MYSELF daj IT".
My children'S life could be like that if I will not make (może REPEAT?) my parents'(!) mistakes. I AM SURE I WILL NOT DO THAT, because if I have not a perfect life with my parents my children also will not have. (ostatniego nie rozumiem, napisz po polsku o co Ci chodziło)
Nie jestem pewien co do decide about (miast on) ale niech ktoś inny się wypowie)