He only started painting when he was 27 years old.
His life is documented on the letters he has wrote.
Before declaring he was an artist, he attempted many other careers.
For most of his life he had a mental illness.
He cut off his own ear.
I don't see any sentences but I can give you some examples of sentences using the past tense irregular verbs the bold letters will be the past tense irregular verbs;
She met him in a party last Sunday night
He told her the truth but she didn't trust him
He went to his English class
They thought she wasn't coming
Okay so now I'll give you examples of some past tense irregular verbs
see---saw
take----took
grow----grew
make----made
you're turning regular words like take and turning it into past tense like took, Sally likes to take all the leftover cookies transforms into Sally took all the leftover cookies
Hope I helped (:
