Hello,
I try to do a small tutorial showing a couple of techniques.
It's just a small portion of coblestone street.
For this purpose, we can use a piece of high density foam.
In this foam, and using a simple pencil we draw some lines ...
The space between lines depend of the scale.
Then, we draw the vertical lines to made te cobblestone.
This is, more o less, the result.
Next, and using the pencil, we draw the footprint.
Using something blunt, not sharp, we press inside the footprint.
Pressing with our fingers is also a good idea.
Our Godzila footprint's.

Now, we put a few drops of black colour with alcohol.
More alcohol than colour. Aprox. 1 drop color 100 drops alcohol.
Cover all surface with this mixture.
Continue....
I try to do a small tutorial showing a couple of techniques.
It's just a small portion of coblestone street.

For this purpose, we can use a piece of high density foam.

In this foam, and using a simple pencil we draw some lines ...

The space between lines depend of the scale.

Then, we draw the vertical lines to made te cobblestone.

This is, more o less, the result.

Next, and using the pencil, we draw the footprint.

Using something blunt, not sharp, we press inside the footprint.
Pressing with our fingers is also a good idea.

Our Godzila footprint's.

Now, we put a few drops of black colour with alcohol.
More alcohol than colour. Aprox. 1 drop color 100 drops alcohol.

Cover all surface with this mixture.
Continue....