Druid Boots (M) is crafted with Tailoring in Mabinogi (shoes). This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Tailoring Companion.
How to get the sewing pattern
The sewing pattern is rank 9 and survives 30 uses; every crafting attempt spends one use.
Warden of the Gods (Hard): Clear the Hard difficulty of the Warden of the Gods theater mission.. Party of 1 to 4; enter through the theater mission board at the matching difficulty.
Materials
Expect about 5 attempts per finished item (20% average progress per attempt). Per-attempt materials are consumed on every attempt; finishing materials once per item.
Each attempt uses
1× Fine Silk — weaving on a loom, low-mid rank
2× Common Fabric — buy from NPC shops
Finishing (once per item)
1× Finest Finishing Thread — Buy directly from any general goods NPC shop.