Can I ask why you aren't printing this directly onto the bag?
Doesn't look like an art issue from the posted photos, unless the other orange is completely under the darker one. Judging by the amount of ink hung up in the screen, it seems like you're laying down too much ink. Could be a lot of things- too low of a mesh, low screen tension, dull/too soft of a squegee, too much squegee pressure, not enough off contact or any combination of the above.
If the mesh isn't tight enough, it could also cause the emulsion in the middle of the screen to be thicker, thus giving a heavier ink deposit in the center of the image as opposed to the sides.