Hey Lucien, nice mix! The instrumental is a bit dark and the drum small compared to the vocals that are bright and clear ;P

I agree with Magghy and you can use different kick sample. good job!

Hi Lucien.
I agree with my pals. You could try level up the kick and snare and use them as sidechain to compress the bass and guitars.

Lucien,
your mix (sorry) is formally perfect. You need energy. The tamburine is TOO high this is not a Bob dylan song, they have to play like Blink 182, Sum 41.. I don't understand anything about frequencies... Thins kind of songs have Kick, Snare, bass, voice, (guitars)..
When you (or your friends - or I don't know who) hear the song has to jump, sing, scream... not to sit and say.. yes is perfect... This is PUNK... Never forget SEX PISTOLS...
(sorry if i am to too hard - I am not a musician... I like music, I like Punk, I live for rock. Rock is life, rock is the feel.., rock is ...)

Cesare, I understand what you're trying to get across, and what you say about energy/style is right, but I'm going to completely disagree on the tambourine. I think the volume there is pretty alright.

Lucien, I think this is a good start, but as the others said, a different kick sample would bring you far in the right direction. Maybe also just watch the upper bass, or compensate with more upper mids and treble, as right now it's a bit wooly down the bottom.

It's not really my genre, so when I try to do music like this, I do reference similar work... Blink 182, or even something like Evanescence would be logical for me :)