I usually drill a hole in the center of the remaining antler, epoxy a piece of wire or all-thread in and sculpt over it with Apoxie Sculpt and blend it in as best as I can. I also make any lines or grooves in the tine while the Apoxie is still plyable. I think most kits come with Apoxie Sculpt and antler stain, possibly some steel wool but I'm not sure about anything else they come with. You may just need a piece of wire to complete your job.