Miru's Interested in Modeling, guys

[Gors]

I'll be blunt: this model is bad. But I'll tell you why

When you create a model, even if low poly, is that you need to abide to the character's blueprint (hell, you're using a blueprint but your model looks nothing like the image).

The model looks like a doodle, as in 'I'm just placing random solids and making a shape out of it, regardless of its efficiency' and while it's ok if you don't intend to animate it or anything, the lack of logic when placing the polygons really bring the whole stuff down.

Sonic chars have really tiny torso and long and thin limbs, however your model is excessively blocky. I don't use blender for modelling but some of the basics are present in all modelling apps: there is a way to configure Blender so you can see the same model in two different perspectives, use that extensively to accurately place vertexes in a 3D view (when modelling, both the front view and the side view must match with the blueprint: or else it's wrong).

Aside from this, no one bends legs outward like this, it's too unnatural and you should redo that part. same with her breasts, they're literally extruded bricks and look terrible even when low-poly is concerned. Look for similar low-poly models, study the placements and try replicating them. If that's too much, at least look for more in-detail YT tutorials about modelling, I remember seeing quite a few that were good for practicing and if you're bold enough, you can master a lot of the techniques in a couple tries.

I am a rookie modeller myself and the difference of apps (I use 3DS Max) may get in the way but if you need some more pointers I could be of use.