Soak your pinecones in a sink of hot water with 1 cup vinegar. Then bake them at your oven's lowest setting for 1 - 1.5 hours. This will get rid of bugs, get rid of the sticky sap, and dry them out. Plus, it will make your house smell OUTRAGEOUSLY good.
If the wreath form isn't flat, use a knife to trim the front and make it flat and smooth. Paint the wreath form with the same paint color as your pinecones and let dry.
While the wreath form is drying, paint the pine cones. More bristles helps you get into the tight areas.
Once the pine cones are dry, hot glue them to the form. Keep them tight for good coverage.
Hang your pinecone wreaths using the red ribbon (cut lengths with scissors).