Paint (something) with a broad brush phrase
To explain or describe something generally without mentioning specific details
I can tell he is not very goal-orientated as he just paints his plan to achieve what he wants with a broad brush.
When asked about the appearance of the robber, she vaguely remembered and painted him with a broad brush, so it's really hard for the police to identify him.
He admonished me for making my plan more detailed rather than merely painting it with a broad brush.
The verb "paint" must be conjugated according to its tense.
The origin of this phrase is based on its figurative use of the phrase "broad brush".
Children or adults often say this phrase to get their friends to join in something, especially to jump into a swimming pool (pond, lake, etc.)
“Last one in is a rotten egg!” yelled Jane, jumping into the pool.