[header] How to fill nail holes [title] Mix dry powder filler with water according to the putty manufacturer's instructions. [substeps] This form of putty should be mixed to a stiff consistency. [title] Pack each nail hole full of putty with a plastic dish scraper and add extra putty so you create a slight putty mound. 
[substeps] As the putty dries, it shrinks. Adding extra putty allows for this shrinkage, making sure the nail hole has been completely filled.