Death Machine

Hey hey ! ^^ Here's a drawing of another lolita [because I love them ] This time I kinda tried working on machinery. I didn't have any reference so basically I drew the whole gun thing from my head, so I'm very sorry that it looks so weird and humanly impossible. I just tried to draw stuff from my memory and mash it in. I hope it's good enough. So, what do you think? Before you go, please give me some advice and feedback about that. I rarely , actually barely, even draw machine stuff so I'm still learning a lot!
Edit: Rescanned because i love this drawing but the quality was crap