What helped me was to start with very small sprites, 8x8 even, and moving up to 16x16 or 24x24 once I had some practice. Even then, it helped to block out bigger areas of the larger sprites and only then return to add details. Also, I say this to everyone, regardless of artistic medium: use limited, well-defined color palettes. It's a lot easier to pick colors, and to keep your style consistent. And you need surprisingly few colors to make vibrant, rich art.

I've also just started playing around with Godot. I started learning pixel art last October. I get inspired at Pixel Joint. AdamCYounis has taught me about animation and efficiency. I've learned a lot by  editing and coloring generated sprites. I've also reduced photos to pixel art for study. Here are tools I find useful. https://itch.io/c/1880025/tools