Carefully flare out the shield so you can slide the connector up and over the dielectric. Ideally one would use a coax stripper for cleaner cuts but I try to write these articles with the minimal amount of tool investment to get the job done. You'll already need a .429" crimper to use this method anyway. If you want to spring for a coax stripper, it is a good investment, as you can usually use them on other types of coax too.