Very nice, but the perspective is indeed a little bit off. Nice style though!
Quite nice but the blue tube has an odd angle especially when compared to the green one which is shown directly side on. If you wanted an angle in it we would be seeing the top not the bottom of the pipe margin, based on the angle of everything else in your images (the perspective is looking down not up). The mixed perspectives takes from the left image too where the pipe is 2D side on and the boxes are from a higher angle. Good color choices
I love you. This is awesome. Goomba outline needs fixing tbh.
not bad, i really like the green tube, the blue tube looks funny not sure why just doenst look like it fits. oh it could be its perspective
nice color choice, also really like the lava and ground next to lava.
Reinventing old classics can be a tough task. It's interesting how you made the backgrounds look room-like rather than like actual environments. It reminds me a bit of Little Big Planet.
I would lighten the question mark on the brick blocks to make it more immediately identifiable. Also, I would change the rim of the green pipe so it's at the same angle as the top of the blocks (and the ground). You could probably flip the blue pipe horizontally and re-color it to make an improved green pipe. I would change the blue pipe so it's at a downward angle (so you don't see the opening). Good work so far!