Inkscape

Let's head to the filter editor.*
As of 0.92.1, the interface is being in development, meaning part of this guide will be outdated shortly. Therefore focusing on structural concepts more,
in the hope to push through a few ideas.

If the faucet with the previous Eroded Metal filter is selected and the filter editor is opened, you can see -or at least, supposed to see- the structural elements
that are chained up, resulting the affected look on screen. The core of the editor is node-based, albeit it doesn't stick out at first glance.
It's hard to track such a filter's structure like the Eroded Metal, which is the main reason for the need of a facelift.

Some general notes:
· it is more useful to have this panel undocked and
· there is no preview inside of any kind.

Every time you tweak a filter's settings, you have to keep an eye on the main window too.

*There is no default key shortcut set for it;
it's available from the Filters menu on top.