Check for any possible mistakes. Avoid using Google Drive's spam policies, so maybe include a note that the link is for educational purposes. But the user hasn't mentioned any policy issues. Keep it simple and positive.
📥 සිංහල වල්කතාවල සමෘද්ධ පැතුම් – Google Drive 🔗 (සබැඳුම තෝරාගැනීමේ විභවයේ පැරණි ස්ථානයක්) sinhala wal katha google drive link
Also, think about SEO. Including keywords like "Sinhala wal katha collection," "Google Drive link," "free Sinhala folktales," might help others find the post. Use appropriate hashtags at the end for reach. Check for any possible mistakes