This is one of a series of preparatory studies for a watercolor painting to be larger, whereas I used as reference a view that I photographed from the river Tejo estuary:

I bought a Brush Pen, a kind of a fountain pen that has a brush instead of a nib but can use fountain pen ink. This 'Sailor' Profit Brush pen (or see it here) is fitted with a very flexible brush tip that goes from narrow to sweeping broad strokes with just the lightest bit of pressure. The Sailor Brush Pen Perfect for artists and illustrators. It uses ink cartridges, wich means we do not need to carrying along us with a bottle of ink, and another bottle of clean water, cause it doesn't dryies when closed. It's an amazing portable Brush! The following are my first experiences with it:

Done in 'ArtRage', from a photo reference. Quick study of a flower, not a finished Artwork yet.

Done in 'ArtRage', a photograph as reference was used.

Digital, from a reference photo, in 'Artrage'.