Urgent, please critique these assets!

[hachimannpixel]

Hi, appoligies for potential spam of these assets, could I please get a quick review of these assets before i submit them today for a task review? just some critique on accuracy lines and shading would be valuable for me right now,  thanks!

the task was

design:

a hairstyle for a character (i did a take on the new captain america infinity war hairstyle with bangs)

a chair

a sphere

and a cube

[Zanorin]

For the armchair you could try softening the general impression by doing outlines with dark brown instead of black and by shading the outlines according to the same lightsource.