Thanks for your nice comment ^^
I know about the fact there are thousands of existing platformers but I have to learn so yeah, I start with basic gameplay mechanics. I think I'll try more original things once I'm more experienced !
About the jump thing: was it weird in a good way or upsetting ? What would you change ? (I'll rework on this game to publish an improved version when rating is over so any insight is welcome - if you have time and if you want to help of course, I we're a lot of people jamming and learning)