I am flattered, but what you are doing wont get you very far. You should not try to copy styles until you have progressed further and can draw something decently well in a realistic fashion (not talking photoreal or anything, just realistic proportions and so on).
The style I have (tho I do not think I have a singular style) I got through years and years of drawing, experimenting and lucky accidents. If you just ape a style without understanding the principles behind it (and there are certain principles as to how and when I use straight lines, even if those principles might be only relatively loosely formulated in my mind) you will not learn much if anything from copying styles. The worst than can happen is that you will learn to imitate a certain style which is not yours to begin with sufficiently well to think you reached a good goal. This can end up in stagnation.
I would recommend that you try and NOT copy any styles until you did more drawing from life (not at the computer, use pencils and such) Start with basics like simple shapes (balls, apples, vases...) and then go to more complex things like trees, plants, hands, feet, whole humans, animals and so on. The skills you will gain from this will directly translate to skills you will need for pixelart, such as a feeling for proportions, construction of bodies, poses, shading and so on.
Later, when you are sufficiently good at drawing it can be good practise to do copies after other artists, be it as direct as possible or in your style. And if you do this you always have to think why something is like it is. Why did the artist you copy choose the colours, the shapes, the composition, the contrasts he is using. THEN you will learn and things you learn will naturally distill into your own style and workflow over time.