[header] How to decorate a headboard [title] Clean the headboard to remove dirt and dust. [step] Use a microfiber cloth and soapy water to wipe down the headboard and get it ready for sanding. This is especially important if it was in a dirty or dusty area like an attic, basement, or storage space. 
[substeps] Dish detergent is normally gentle enough for washing most furniture, but if you're concerned about the material of the headboard, you use oil soap which is furniture safe. You can find oil soap at most craft stores.