Well... the first thing I say is that you don't have to try and use every bit of the decal/wrap... it's a personal choice... keep in mind that many decal sheets are the same layout but just with different patterns that may or may not work well with the original intent...
Based upon what I've seen on other wrap/decal configurations, here are my thoughts on each bit:
These are likely the "Power 1", "Power 2".... decals that you could apply to label the batteries in some spot... but in your purchase, the words aren't present.
These are likely the "If found please call..." decals where you would write your phone number and apply to the body above the camera gimble.
These are the DJI logo shapes that you can apply wherever feeling the need...
I think these are accent shapes you can put wherever feeling the desire...
Need to see what you've completed so far to determine exactly where these go. Hopefully, there's some sort of reference photo(s) to look at otherwise, you just have to figure this one out on your own.
The star looking pieces I have no idea but the rest appear to be left over pieces. This appears to be a copy or something since the DJI logo is not even printed. How did your quad turn out?