I don't. I do not like to lie to people about their abilities and then will not do that there either.
I already told you, you have some potential yet you lack of practice and experience in spriting.
I'd recommend you to continue studying. And I have good material for learn
Also this one.
And to ensure that you may get better:
That was my old plasma gun that I've redone once. I felt that I could do it. And I did, it was worth of effort.
Yet it lacks of shading pretty much, but suits some things like freedoom just right.
And this one was made ~month ago for the People's Doom. This beauty shaded, colored and looking good overall, therefore have all it need to be good looking sprite.