This middle crystal slot is so confusing. PA i have spent hours trying to make sense of this and work out how it works but yet i still have no idea. Google has no idea and players in chat have no idea. So im looking for someone who can explain it in plain English how to get a crystal in that middle slot.  

PA please just delete this completely and re do it to make it simple - black spirit claw and craftable outfit - enhance - crystal slot open. now to make it simple just let me buy a crystal from peal shop or loyalty. Such a simple thing made so confusing.

Even the text explaining it on the equipment tailoring coupon below makes no sense. Your mixing up pearl shop outfits and craftable outfits  why ?  stick with one thing stop overcomplicating everything. 

Please someone explain to me how it all works  step by step.

So far I have used black spirits claw on my (Kunoichi) Lovely Bloom Armor Outfit which opened the middle crystal slot.

I then bought from CM (Lahn) Orwen's Travel Gear but it will not let me heat it.

Now i have no idea how to get a crystal that goes in that slot. I want movement speed if possible.

ID: 17611

Equipment Tailoring Coupon

KR name: 의상 교환권

Special Items Weight: 0.00 LT Warehouse Capacity: 0.00 VT

Bound when obtained - Personal transaction unavailable Game shop item - Description: You can exchange certain craftable clothes for a costume with the same appearance. You can equip it in the Appearance slot of the Equipment window, or use Heating to convert it into a crystal to transfuse onto Pearl Shop outfits. - Exchangeable Costumes and Extra Effects: - Amity +15% Serendian Smith Garb Serendian Soldier Armor Jordine's Casual Wear Jarette's Armor Orwen's Travel Wear Edan's Travel Wear Garnier Troupe Garb Serendian Formal Wear Valencian Travel Wear Ahon Kirus Armor Delphe Knight Armor Shroud Knight Armor Black Leopard Armor Florin Herb Gatherer Clothes Florin Cook's Clothes Kanna's Naga Disguise Terrmian Casual Wear - Movement Speed +2 Calpheon Noble Suit/Dress - Underwater Breathing +90 sec & Swimming Speed +90% Bubbly Diving Suit - You will obtain an Ancient Spirit's Crystal with the same extra effect of the costume used with Heating. Use Black Spirit's Claw to transfuse the obtained crystal onto a Pearl Shop outfit. mes unavailable for enhancement into outfits bearing the same extra effect

That coupon description is very misleading / ambiguous.

Try the guide at https://garmoth.com/guides/post/tailoring-coupon-guide.

You're aiming for: