Door Molding Diy . See more ideas about home remodeling, moldings and trim, house design. Then use a nail gun to secure the boards to the diy panel door. High Street Market 3rd Floor DIY Wainscoting and Trim (Update) from highstreetmarket.blogspot.com.au Then glue and nail in the end returns. For homeowner jaclyn dryden, the magic of moulding involves her secret weapon: Slide the trim molding tight to the shim and.