As i am from country where bitcoin is stated to be a illegal currency so, its ok to earn form small services and signature campaign here and hold my bitcoins ?
I need some suggestions ?
I love bitcoin and i can't leave it !
1. Never ask strangers from the internet for legal advice.
2. No, it's probably not legal, but without knowing which country you're from, it's hard to tell.
3. You'll probably be fine unless you run around in
I <3 BTC T-shirts, and stopping people in the street to sell them your bitcoins.
4. Feel free to ignore (2) & (3), because (1)

T-shirts - I want to share interesting story.
I heard some guy complained that customs official at some English airport searched for bitcoins in his luggage and asked him: "Where did you put them? What?! The bitcoin! Where is it?!"
I don't think that custom official had any idea what bitcoin looks like. And all of that because he was wearing some bitcoin t-shirt or something.