[header] How to add nailhead trim to upholstery [title] Choose quality tools and materials. [step] Poor quality nails will bend and warp when you're installing the trim, which will make the process more difficult. A regular hammer will work just fine on nails, but a rubber mallet or hammer covered in cloth will protect your upholstery should you miss a nail. 
[substeps] There are many different size, shape, and color nails you can use in this project. Check your local hardware or craft store to find unique nails for your trim.