If I have trouble pronouncing?

I am wanting to relearn spanish after 10 years. I know how words and letters are supposed to be pronounced but I feel silly and rude when I try to manufacture the right accent. I also feel rude when I just spit it out in my english accent. Which is the least offensive? I can speak at a usual pace when I don't apply an accent but I sound like the worst kind of redneck, and when I try to sound right I have to speak so slowly with a fake accent that I wonder if they think I'm insulting their intelligence.