How to use a PNG for a sprite costume?

Help with Snap! Snap! Editor
1

I am remixing a project, and I want to replace a previous PNG costume of a sprite with another. How do I do so?

2

Just drag the png into the costumes tab to import it. Remove the original costume, and set the name of the new costume to the name of the old costume.

3

by importing it at file -> import or by dragging and dropping it