Saying that this is your 1st picture doesn't mean you will get comments like:
"Ohh pretty nice for your 1st one"
Most people do not care whether it's your 1st picture or not.
Personally I always liked this type of pictures. This one looks like made in MS Paint. Maybe get a reference picture, use pentool for nicer lines. Your picture looks like a sketch. I am sure you could draw it better if you took your time and concentrate on drawing. 3/10 from me.
I am looking forawrt to see some more pics.
Thanks,
~Luke