If you do not have a Napster Premier subscription, not to worry! You can still access your artist page by searching www.napster.com without logging in.
Let's start by navigating to www.napster.com in your address bar. Once the page loads, you can use the magnifying box in the top center of the page to look for your artist name. Under "SEARCH RESULTS FOR "[your search here]", you will see a list of "Top Matching Artists".
Once you have navigated to your artist page or release, you can simply copy the URL in the address bar and you are good to go!
This method also works with tracks and albums as well! Simply input your artist name and track/album title into the search bar.