Hi, the game is really cool and it is really impressive for you first game. Since it is your first game I will tell some things that you could have in mind to improve: transitions, music, audio effects, other animations than the own player, chose of colour, particle effects and others.  The art is really interesting and I really liked it, you should continue making that!

Things that you could improve specifically on this game: the camera movement on the Y is no smooth and doesnt feel good, other thing you could do is organise the green dots in a symmetrical way, it feels more professional and it looks better.

Good job making your first game ! I gave a big comment because I really want you to improve and I really wanted someone to tell me when I started. Continue with your journey ! Good luck !

Just seen you speak spanish ... so feedback in spanish. :) 

Un buen juego para ser el primero. Este es mucho mejor que mi primer juego !!!! 

Además del feedback que te han dado del salto, échale un ojo a la cámara del cinemachine, que aunque no perfecta verás que es mucho más suave y además te permite definir las cosas que hay en el nivel en función de hacia donde se mueve el jugador. 

El parallax de las nubes es genial por cierto. A seguir mejorando !!!!

Mi inglés es muy malo. La caída después de saltar es demasiado rápida. El juego se parece demasiado a Mario Bros, pero es muy entretenido y engancha.

My English is very bad. The fall after jumping is very fast. The game looks too much like Mario Bros, but it is very entertaining and engaging.