Ok so I will try to continue here. If there's not enough response I'll try with a new one.
I dared to do my very first character sprite. It's supposed to show a young man (around 20) with some headphones around his neck.
What do you think? Anything to do better? I admit that I followed a tutorial but I changed a lot. Different shirt, different hair, different eyes, happier, a bit more muscular

. I also tried to give it a bit more comic like look (The tutorial one especially the face looks to realistic for me)
This is my sprite:

And this is the tutorial version (just for the comparsion):

Thank you and many greetings
Kroan