I'd say getting the 4th shawl it within our reach and fairly simple...but will take a while. The last step of the Velium Vapors Vial in the 4th shawl quest does not require any skills. So, I can get my pottery up (been needing to do this for Frell anyway) and make the hard part of the VVV, giving you the resulting vial. Then you can combine it to get the vapors.
For final completion, you need to have the following skills:
Tailoring 162 (trivial)
Fletching 190 (trivial)
Brewing 143 (NOT trivial)
Jewel Craft 186 (trivial)
Pottery 188 (trivial)
That said, you can still do the quest up to a certain point getting a nice back item...as the shawl you get back for each one is usable.