Spontaneously Produced Sentences

Is this for real?
Is my English really improving?
Like what the heck.
How did i produce 7 sentences with only 1 mistake?
What's most important of all, Mr.Eric's doing the marking.
This is soooOOO random.
I honestly wrote my 7-sentence-long essay randomly.
So this is what's it's like.
Guess my sis was right,
''Let the sentences come out spontaneously, never
ever memorize lists of idioms coz they serve no
purpose but make your essays cheap.''
Indeed. O_O
Though adding idioms prove that you're better.
BUT___
Too many cooks spoil the broth.
Too many idioms spoil the essay =))