First map came out really bad. What went wrong?

So this was first mission and I did it of my house. Automation went fine and everything seemed ok. Once processed, however, the map looks terrible. hundreds out spires shooting out of the ground where there should be trees. Huge areas of flat land where there really are trees. Also I added about 30 pictures from orbits around the two buildings and they also look bad. The lines of the buildings aren’t even straight. Before I try again, I’m looking for some advice. Elevation was 170ft i think.

EDIT- I should add that I am flying a P4 on android.

Hello, sorry to hear about this. You may have flown at too low an altitude. Check this out and let me know if it makes sense: I’d also recommend you have the latest version of both DD and DJI GO installed.