Welcome to RCsocial.net! Your blog looks to be off to a great start.
I am unfamiliar with Write.as but my first impressions are very positive. It looks to be from a group called "A Bunch Tell" and they have several federverse friendly services and open source apps.
I will take a look at how their integration works and get back to you. Probably, their setup/profile will just need an API key to your RCsocial.net account. To get that, click the "gear" (upper left) then </>Development, then "New Application". At that point it will probably be confusing. I'll see if I can make a "do this then that" specific outline for you.
Deacon Patrick, OK I have checked it out.
Write.as only works as a peer in the federation (as far as I can tell), not through an existing account. That means that people could follow you on RCsocial.net and/or on your Write.as blog.
Write.as by itself is not a replacement for RCsocial.net/Mastodon, but complementary. Be sure to add your Write.as link to your RCsocial.net profile (Edit profile -> Profile metadata).
To make your Write.as account something that can be followed in the federverse (separate from your normal RCsocial.net account), you will need to enable that function in your Write.as profile. This page has more info:
Thank you, @George! I appreciate the give of clarity. May God startle you with joy!
RCsocial.net — a friendly social networking space for those with an interest in Catholicism.