Weapon Design

Hey Im New To This Weapon Designing thing, I have a few drawings of what i want as my weapon, and Im not sure how to make it, (or in blender XD)
I Was Wondering if anyone could either
1: help me out with it step by step
2: Do It For me…(guessing no one wants to :P)

Thanks, Blade

lets have look at your drawing i have nothing better to do at the moment since mixamo is such ***** lol