My future. Proszę o sprawdzenie błędów.

When I was child I wished would be a famous singer or dancer. But when I grew up my dreams have changed. Now I wish would be a dentist. Firstly I wish had finish my actually school. If I were dentist I would have my own surgery and a few employees. Maybe I will have more than one surgery. I wish would finished at the Medical University of Gdansk on the direction of medical-dentist. If I had a lot of money, I would build a big house in suburbs Gdansk. This house will be have a big garden with many flowers. I will have a one child. I wish I had enough money to security future my child. I wish I would visit many places around the world. If I were rich I would help organization, which sick children. I know that in my future life will be many surprises, both happy and sad. We all have a right to dreams, so why do not use it.

When I was (brak przedimka) child I wished THAT (brak cos) would be a famous singer or (brak cos)dancer.
Now I wish THAT (ale kto? musisz napisac) would be a dentist. Firstly I wish 'had finish' (co to jest?) my 'actually' (zla czesc mowy) school. If I were (brak cos) dentist I would have my own surgery and a few employees.
I wish (ale kto? co? musisz napisac, nie jestesmy wrozkami) would 'finished' (zle slowo) 'at' (niepotr) the Medical University of Gdansk 'on' (under) the direction of (cos brak) medical-dentist. If I had a lot of money, I would build a big house in (cos brak) suburbs (cos brak) Gdansk. This house 'will be have' (co to?) a big garden with many flowers. I will have 'a one' (popraw) child. I wish I had enough money to 'security' (zle slowo) (cos brak) future (cos brak) my child.
If I were rich I would help (cos brak) organization, 'which' (zle slowo) sick children. I know that in my future life will 'be' (zle slowo) many surprises, both happy and sad. We all have a right to dreams, so 'why do not use it.' (tego nie rozumiem)

uwazaj na te przedimki, bo ich nie uzywasz, a powinnienes.