So whilst out yesterday I thought... 'get a new bottle and try again'. So I went through the drawing inks at a local art shop and ended up with a bottle of Burnt Sienna Liquitex professional acrylic ink. I had gone through the 'specs' to find one that was as lightfast as I could find there and these Liquitex seemed to fit the bill. I even got the shop keeper on the internet to check.
So today after a little practice playing with a pen and brush, I chose to go with a small brush; a round no.2.
This sketch of Paseka, one of the Abu Herd elephants, was the first one I did and I drew it three times before was I happy with the result. I am not pre-drawing these first, I'm going straight in with the brush to try and get a feel of spontaneity in them.
This elephant was also done three times before I got a result I was happy with.
My next attempt at a warthog portrait did not go so well, so I have binned that one and tried a banded mongoose instead, which turned out ok on the first attempt.
I shall be doing more of these I think... I like the feel and look of them.