"And tell didn't you made simple thing at the beginning or you strated knowing everthing?"
-I didn't clutter model section with my shit in the beggining.
"there is models on this site that just ue a weapon or one attachement i used 3 attachement and created a skin"
-The fact that you think about the number of attachments and not the sense of them is worrying, to say the least. Please, you have a lot to learn, so do it. If you still feel the need to share your stuff with other people so they can comment on it, use the modelling forum, it is for people who need feedback before they upload stuff, mainly. And you need feedback, because I can't even start telling you what's wrong with your models, since everything is wrong, from start to finish.