The second one here had Caran d'Ache water colour crayon added with pencil crayon to bring up a bit of detail.
On no.3, I just used Caran d'Ache crayons as there was quite a lot of colour already on the page from the original print.
This was treated in the same way. The paper was copy paper as advised by Gina - fine for the prints themselves, but it wrinkles when water is added and I'm not even sure it has dried in this last photo! I could have ironed or pressed the pages of course, but am far too impatient to do that.
It has been such a lovely day today that I sat in the garden doing these this afternoon. Hope you have had a lovely day too.