Tell something I did well and something I did wrong

hello, I´m getting back into drawing I have been practicing gesture for 3 months to now.

Some examples from December
https://imgur.com/a/Jsn09F1 

November 
https://imgur.com/a/6uDtRFm

October
https://imgur.com/a/xdPXAdg

I can't quite see the December ones, but what I can see is that the flow of the pose is very well captured in your drawings, which is generally the point of gesture! I can see very well how the body is positioned and where it's pointed, which is nice. These also look to be very quick, and it's always good to build up the ability to draw fast and precisely. 

One thing I would attempt is to give yourself a bit more time (or don't) and try to add some detail, like the general shape of a limb or feature, and to push those shapes as much as possible. That way you retain the flow-y nature of your pose work while also adding some clarification.