You need to host exactly the following JSON file at https://lynalden.com/.well-known/nostr.json

https://nosbin.com/nevent1qqsw64tz3qwll36uaeq52w66qks2j0fps8jnae0527a675m9f6az9mcpzemhxue69uhkzarvv9ejumn0wd68ytnvv9hxgqg4waehxw309ajkgetw9ehx7um5wghxcctwvsq3wamnwvaz7tmwdaehgu3wvekhgtnhd9azucnf0gq3gamnwvaz7tmwdaehgu3wdau8gu3wv3jhvqgswaehxw309ahx7um5wgh8w6twv5q3jamnwvaz7tmwdaehgu3w0fjkyetyv4jjucmvda6kgqghwaehxw309aex2mrp0yhxxatjwfjkuapwveukjqg5waehxw309aex2mrp0yhxgctdw4eju6t0qyt8wumn8ghj7un9d3shjtnwdaeky6tw9e3k7mgprfmhxue69uhhyetvv9ujummjv9hxwetsd9kxctnyv4mqzxrhwden5te0wfjkccte9eekummjwsh8xmmrd9skc39tpej

Then you can update your profile with the NIP-05 address "_@lynalden.com". The underscore is a reserved name to indicate that you are the domain owner, so it will simply show as "lynalden.com" in clients (as opposed to something redundant like "lyn@lynalden.com").