make a thing of

make a thing of

1 regard as essential. 2 cause a fuss about. informal
See also: make, of, thing

make a (big) ˈthing of/out of something

(informal) make something seem much more serious or important than it really is: It was only a small mistake, but he made a really big thing out of it.
See also: make, of, out, something, thing