Make yourself available to your church or ministry organization to proofread material before it is published or sent out.
A fresh set of eyes helps avoid common grammar or spelling issues.
You could help your ministry organization improve the professionalism of their written communications.
Here are a few resources:
5 Tips for Proofreading from MasterClass.
What is Proofreading. Article. Includes tips for proofreading.
Writing Skills website. Article about proofreading.
Top 10 spelling tips from the writing skills website.