to compose music, words etc during the performance; to provide, make or do (something) quickly, using whatever happens to be available

make up

a particular (style of) product from a particular business company; to produce, construct, shape, form, (something) (especially using parts or materials)

create, build

to make letters or other symbols on a surface, especially with a pen or pencil on paper

put language down on paper

of write

put language down on paper