You know Maher, I've been watching your thread for a while now and I've got to say that I think you are much more capable than what is presented. In every post I see a part or section that looks really good and seems like you spent a lot of time on; unfortunately it is brought down by the rest which is either too big, too small, sketchy, or just poorly laid out. I think if you just put abit more time in to any single piece and a bit more planning you're work will really start to stand out.
Right now the most notable thing you could work on is not only anatomy but the poses you put your characters in are very awkward and stiff. You should also keep in mind the size and shape of the arms which seem to vary a lot In your drawings.
There's a lot more to be said that may help you, but I'm doing this from my phone so, yeah. Put a bit more work Into your stuff.