>>1989811my guess is that you forgot to set the bg color transparency to 0 on the left bar under document properties. I don't know of anything else that could leave a bg, other than another object underneath.
Overall it's good. A couple of technical issues resulting from the source image being a sketch.
#! Ribbons are generally smooth lines rather than with sharp turns, except for the ends of course.
#2 (and this is more of just how I would do it) The sleeve broken-ribbon-line-thing could be made to look like one continuous broken line by making it such and then splitting it into segments.
#3 (again, just my preference) Making the fluffs circles loses their fluffiness, I prefer to either add some fur-like stuff (kinda like here
>>1988438 ) or have it be a many point star polygon with a bit of randomization to make it seem more natural.
Everything else seems to be solid, though the green sleeve appears to have some unnecessary coloring. Sketches tend to have some mistakes and as vectorists we have the ability to fix such things. Don't always blindly just trace everything how it is, the artists are people too, sources can have mistakes too.
