How do you earn badges in GrabCAD?
Uploading most models in 30 days gives you a badge.
Uploading 100 renders of your models gives you a badge (meaning you have to upload 100 of your own models)
Uploading 100 renders of other members models gives you a badge (you have to download 100 models of other members and make a render and upload it - 1 render counts per downloaded model)
Sum of 10.000 total (and more) downloads of your own models gives you a badge... (having complex and refined models helps here)
Three badges get your profile to 100%
Contributing in the Q&A section increases your rank also.
Do not worry about ranking. I sometimes fall down, sometimes go up. Makes no difference to me, I make no money with a higher rank. This is not a competition.