Someone to take my existing slides for a business pitch and make it formal and professional and more refined and better to view -- 2

I am in need of someone with formal presentation skills to help me refine an existing business pitch. My existing slides are in PowerPoint format and there are less than 10 of them. I have a general color scheme and branding guidelines, though I am open to suggestions for improvement. I need someone to refine the slides to give my pitch a professional look, which will ultimately help increase my chances of success.