Advice on a pre-paint sealant:

• linseed oil and mineral spirits, 50/50
• https://www.lsirish.com/tutorials/coloring-your-project/basics-to-painting/steps-to-success/
• https://www.youtube.com/watch?v=_UXczoOA5Fs
• https://www.fredzavadilwoodcarving.com/1719/how-to-prepare-carving-painting-staining-finishing/
• http://www.jrcarvers.com/index_htm_files/How-2_Paint_Carved_Characters.pdf

Advice on staining:

• Steve Ramsey