For the hand-painted texture, I started by looking at how I would achieve the right aesthetic before adding colours and any extra details. I used a basic layer, filled with a dark brown colour to start, before adding brush strokes of several lighter colours. I used a block brush for all of this, changing some basic details of the brush to achieve the right feel that I wanted. I also added some tonal and hue variation. It is important to show the brush strokes to keep the hand-painted aesthetic, so I made sure not to blend or blur the strokes together.
In Substance Painter, I added the right materials to add metallic and roughness to the model. I also found that the model was too dark still, and that the texture needed to be brighter. To fix this issue, I added a white layer on Photoshop and reduced the opacity so that it slightly brightened the texture. This worked well as it made the colours more vibrant without washing out the colours.
Marmoset Viewer:
Next I plan to make the cutlass and the gun that I am designing, before making any improvements to Captain Rampage and fit the art style of Sea of Thieves better. All feedback is welcome :)
Big thanks to Matt Wilkins from Rare for making this breakdown which has helped me so much with making the texture. His breaksown guide can be found here: https://www.artstation.com/artwork/Ka6R8G :)