i got your file and have repaired the errors
your file back = https://adobe.ly/2RykcKQ


- error 1 is the model itself and very common for new makers... its easy to fix by just asking Dimension to build a new UV map
- error 2 is also common but important because adding a decal to this model will cause Dimension to crash [giving you a BS error message] and will also make any 3d print fail
I recommend adding blank space around Decal to save yourself going nuts trying to place them... note i added 200% to the image so the correct placement will be around 180-190% and i use my mouse [with the lock] to adjust this by eye
I also recommend adding at least 1 bookmark so you can move a model around to test and then just click the bookmark to jump back for rendors
final note the pink mark on the front of the test rendor is noise from the model under i.e, the cup... i didn't repair it because the question is about the lid but I figgure you may want to know
all up these are small errors... you did well mate, good luck!


p.s, nice design
