As my second game jam, it went pretty well. I did most of it without using tutorials. I plan on making game without having to rely on tutorials and this is my first step. I tried to add wall jumping but I couldn't, so I left it out. I did the level design last last so the the levels are short. Overall, I still need to improve and game jams have helped me.
Being able to do most of it without tutorials is already pretty good going.
Don't be afraid to use them though, I used to work in business IT and noticed that even professional coders need to use cheat sheets and look stuff up from time to time.
You can have a firm grasp of a language or system and still need help from time to time.