Devil's Kiss Vigor Bottle

I understand there are some issues with the mesh in this model. I'm am doing my best to try to fix it, however, I currently only know how to user Blender & Tinkercad. I am a beginner at Blender, so if there is a way to truly fix this, I am unaware of it. With that being said, please feel free to remix it & try to improve upon it. In the meantime, I will try to learn a more in-depth program, like Z-Brush, in attempts to fix the mesh.

Devil's Kiss vigor from Bioshock Infinite.
For personal/prop usage only (non-commercial).
Will require supports.
Comes with 3 files; one as just the bottle, one as just the cap, & the last as the bottle & the cap if you want to print them at the same time.
I have not printed this myself yet, so please let me know if the cap is too big/small & I will do my best to resize it.
Yes, I am working on the other vigor bottles.
Feel free to remix.
Please upload a photo if you make one (I love to see other people's creations)