Hi, Sam -
Nearly all of my LIAO tutorials address how to make a custom shadow. The store description will specifically tell you if it does.
The two mentioned above take the drop shadows a little further (LIAO No. 8 and HTDT No. 13).
Also, LIAO No. 3: Custom Stickers and Clever Layering addresses shadows exactly the way you need it to for the tutorial from Monday night. It also shows you how to do the weaving (like we did on Monday) but continues with the shadow instructions.
I'm glad you enjoyed the tutorial. Let me know if you need any additional help.
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Cassie
My Gear: Nikon D300s w/18-200mm VR & 50mm 1.4
Software: Adobe Photoshop CS4, PSE 9, Lightroom 2