Nice art studies of figure and perspectives!
Regarding about accuracy, i think you went a bit too far lmao. Looking at the comparison is way too much like tracing (unless you have an absolute great eyesight to see the difference). I'm not saying it's bad to be that accurate but perhaps you may want to ask yourself what's the purpose of doing this art study? If you are founding to just aimlessly drawing and not learning anything, then you are mostly likely to be tracing
For me, accuracy means the ability to deconstruct the character pose into separate easy shapes (e.g. oval shape for ribcage) but still hold the connection/purpose of the action itself. But that's my interpretation and could be dffierent to yours which is all good.
Check out this video on the meaning and usage of tracing.
Aside from that, your gesture drawing looks so damn great. Keep it up!