I have a thing for colored pencils, plus I have few inks starting out. I've only used pencils with this stencil so far, and while the edges of most stencils tend to cause flecks of color to flake off, sometimes staining your project, embellishments or fussy cut/ trimmed things can almost always solve that issue. I do blow these flecks off my project frequently, and I am using not Altenew pencils.
Perhaps outlining each area, for stencils like this without too many small areas, then removing the stencil and carefully coloring, could help too.
I have not blended the coloring in any of my examples as currently I am enjoying the youthful, whimsical look and texture leaving it unblended brings.