Write the next sentence in the following story.

How to grow a crystal initial
Shape a pipe cleaner into the initial you want.
Make sure that the initial shape will fit in the jar that you've chosen.
The jar should be wide-mouthed and of a decent but not too large a size for the this project.
It should also be well-cleaned before using it, so that there is no residue to interfere with the crystal forming process. Pour the hot water into the jar.