@GFA
Nope, dimensions are 96x96.
Anyways here're the next sprites, for Pokemon Iron and Stone:
Twibat
It's big - but is it not excessively big?
It diminishes the sense of scale for any random Pokémon to completely fill the sprite canvas like that, unless you plan to draw every sprite at a larger than normal size and make truly large Pokémon fill an even bigger canvas.
At this point, such a large sprite also servers to highlight the lack of any advanced technique going on in the sprite. There are no colour limits to work around when working on a PC platform that uses PNG files to display graphics yet there is a lot here which can be polished by using more colours when necessary.
There isn't a single instance of in-between colours being used to smooth the area where two contrasting colours meet, not even where the white and blue areas on its torso meet. Its eyes are very poorly blended and aren't even outlined - bright red meets a dark blue and a bright white without a single pixel to blend the two areas togther when this is done on official sprites where strongly constrasting areas meet.
See how the black bands on Electivire have pixels where they meet the bright yellow body that are a colour in-between yellow and black, as to blend the two areas together.
This one is a very good example of how large areas of shading can be smoother over with another colour used where the light and shadows meet.
A strong contrast between the bright and dark blues on its snout is smoothed out by placing a few pixels between them
The zig-zagging stripes and green areas are smoothed out as much as possible.
And this thing used in one of BW's menus shows what can be used to make a much larger sprite look nicer.
Where these sprites can get away without using in-between colours to smooth out shades it's often only because they are a lot smaller than the sprite you've drawn here, and they don't have spaces nearly as large filled with colour.
When drawing large eyes it helps a lot to have a well-coloured outline between the face and the eye to give it shape and to define the eyes away from the rest of the face, and often use of darker and lighter colours inside the eyes to give them a smoothly curved shape and blend areas together.
In this sprite, Feraligatr's comparatively tiny eye uses 7 different colors.