Critiques needed on my mini-pieces

[sand ingot]

I want to make my art look more engaging and interesting so i would like some advice on my pieces in order to improve.

@storm pumice

[plain sleet]

I think you did great job with the bottom right work. I really appreciate how you made the character burst out of the frame it makes the work look exciting and energetic. something i would recommend with the bottom left work is having a bit more contrast in shapes. I could be wrong but it looks like you were trying to make the character more rectilinear so I think making him out of rectilinear shapes instead of curvilinear shapes would help. With that said the circles in the background add a great contrast and I think adding a few more would be great. The piece on the top does a great job with placement of the bees and leads me across the work. But I think with the bug on the left could be a little less transparent. I also think this would balance
out the work.

[severe girder]

Dunno what u want to exactly but like ur drawin is very good, mb if u want to be more "interesting" i would say background is somethin you have to do more, like the one on the top, i pass most of the time looking the one in the top, cuz lot of detail, it tell us somethin, than the other are just character ?

[storm pumice]

The bottom right is pretty cool, but I suggest making your characters stand out, and make sure it tells a bit of a story, the top right is a bit interesting in this sense, but the colours are all very bold and saturated, so the characters just fade into the background.