No problem. Keep working at it! Improve at a pace that you feel is comfortable. Most importantly, have fun!

Wow! Thanks thats really helpfull. As a starter I  don`t really know advanced stuff like that, and your critique is the way i could advance. Didn`t expect such a friendly community. Thanks a lot for your help, I`ll try to use your hints in future works

Hey there! I like the idea you have here and I'm a huge fan of JoJo. I hope it's okay but I made an edit of your work. It's just a slight critique but I think taking a look at it might help you improve as an artist.

--Disclaimer: Just as your art is subjective so is my critique. There may be aspects of it that you agree with and those that you don't. Please feel free to take it in any direction you like.

http://i3.photobucket.com/albums/y63/vashers/Kakyoin_MAKAPIXEL_CRIT_zpsrjr3rc9v.gif 

Okay so I'll list out what I changed and why.

1: I have changed the contrast, value and hue of the image. I feel it helps it pop more. I tried my best to keep the same sort of pastel look you had going on as I have no way of knowing if pastel was your intent or if it was an issue with picking colors. This part is the most subjective because it's murky for which is the better way to go.

2: The secondary pixel lines you have next to the outlines are uneccessary, it's called banding and it's been thought to be generally unpleasing to the eye (again this is subjective) My personal feelings on the matter is that it must be eliminated. I've instead turned those lines into Anti aliasing (placing a pixel that is half way between in value/hue/saturation inbetween a larger than 1x1 pixel gap in order to smooth out a line) Hard to explain but it's easier to understand if you check out the differences between the two versions.

3: Added highlights for the text which can help make it pop more. I also changed the highlights as well as added highlights to Kakyoin's hair.

4: I did some clean up on little areas, chin, clothing, hair. I made the silhouette for his finger more clean by cleaning out the detail around that area.