Wait, certain materials are difficult to work with? Which ones?
Fabrics that are harder to work with or require specific sewing equipment are: silk charmeuse, anything with bead work, velvet, spandex and leather.
This means, expect to may more for a garment made out of any of the above materials. Also, you may have to seek out a specialist for leather, spandex or bead work - not all tailors have the needed equipment to work with these materials.
Why is leather difficult to work with?
Another example would be leather—it’s difficult to work with because you can’t use pins because it makes a hole in the hide. So if I sewed a seam and I messed it up, I ruined it because it’s put holes in the garment. You definitely want to find a professional if you have leather.