Some advices for 3D beginners :

Good start anyway , like anyone starting the first models
lot of times are really not very good

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It seems you have used Subdivion on a low poly model ?
Well it seems to have too much wasted polygons !
can you post a wireframe picture ?

To be honest, your models lack lot of details in the hands,
they look much like boxe gloves than hands !
The face is not detailled at all.
Textures are an empty color !

Good start anyway, just one advice, keep modeling, only lot of
practice will give you good models.

Perhaps instead of traditionnal polygon modeling, you could use
sculpting + retopology !


I have started lot of years ago with traditionnal low poly modeling, if i had in the past sculpting and retopology tools
i would have done lot lot better models without
spending so much time on low poly modeling (especially face modeling that is complicated without scultping).

Some basic of good character :





Some tutorials :

Blender character 1

Blender character 2


Keep practicing !