I combine shipping too!
As u may know, combined shipping, is after the base pound, each pound that increases, the price per pound decreases!
Also, as u may know, in any of my listings, on the right, about 1/2 way down, under "Seller information," u'll see a link "Visit Store."
Press that, & put the pattern name or keyword on the upper left.
Do a search, & u'll see them.
I use bubble wrap (often doubled, sometimes tripled), I use packing peanuts (on all four sides, top & bottom), & use corrugated cardboard boxes!
U may want to look at my other my listings!
Additional pieces could be sold at a discounted price!
I find it handy to have extras, not, only, in case of breakage (God forbid), but in a pattern which may be hard to find (& at these prices!)!