Alright let me explain my strategy to get good pixel art in no time. I used it during this jam and this was really effective.
First as i was working in a group, we decided of an art style. We chose cute pixel art.
My process is to find an example of a pixel art that match the style we needed.
Then reproduce it on my pixel art soft.
And play with it to get what i want and be sure that all art have a consistency.
Here's others examples: