How can I improve my delivery maintaining speed and consistency?

I wouldn't lie. My first thought was to promote and advertise. But I genuinely want to up my game. How can I maintain speed and consistence and still sound good?

Any tips? Ideas? I am not satisfied with my delivery. The voice sounds a little dry in the beginning and very 'depressive'. I WAS under a lot of stress and duress to get this out of my system.

It wasn't a perfect rip by any means. But I am happy with the speed though.

Thanks for watching.

[I smoke a lot of weed too, plus Swisher when on ketosis. I hydrate as needed.]

Somewhere I read Benedict Cumby doesn't drink booze or caffeine or smoke when shooting his lines for Sherlock. He wants a highly oxygenated bloodstream.

https://www.youtube.com/watch?v=IuXPb91rxHs