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Hi, im making a minimalist remake of Super mario kart. I'm not an expert at drawing, but I do my best to make it look nice.

If you can, review the first glass and tell me how it turned out and what to improve

Link:https://mkpc.malahieude.net/map.php?cid=59861

Does anyone know what drawing tool is used in this multi-cup? https://mkpc.malahieude.net/map.php?mid=3655
I really like that style and would like to know what application is used