Mensajes en el foro por Ayurassi

Hello, I`m looking for advise, maybe tips how to improve and what`s wrong with my sketches... I think I don`t really get the purpose of 30s-1min sketching tho

I will take any critique :)

sketches 30s-5min:

https://gyazo.com/41dbf026a6a3d2cded07138c6c78361f

https://gyazo.com/010eb32ece6fde9fc133eaaa81d3fece

10 min +:

https://gyazo.com/92124aa055d263e4b39b2aafb5d0c644

https://gyazo.com/51b3be88d3310604b6d900c53b704179

https://gyazo.com/30ed72073cd1acd861556eced6a5418c

Thanks!