Thank you for reply. I will definitely listen your words and practice about this.
On this, your guy looks like he's sliding and not walking. He never once picks up his feet. His muscleture is very, very off and he looks more like a rock with cracks in it than muscular. He is also lacking in shading of any sort on the upper body. The attempt at shading on the legs you can't see; it's far too light. Use a reference of a muscular man when you remake this, since this does need to be remade.
I am aware it's your first work, but I'd suggest redoing this and starting smaller. Maybe not something totally custom, just to get you practicing with things that are well done already and see how professionals use their pixels.
My first walking charecter, I think I must be more practice to learn how animate.
Not bad reminds me Popeye somehow