Every speaker has strong points and challenges. You should be alert to never undermine your strengths by calling attention to your weaknesses.
What brings this to mind is a presentation I witnessed last week. The speaker brought strong emotions to the table. It was clear that she cared and wanted others to care, too. No over-the-top hand wringing, just a sincere passion for her area of expertise.
Unfortunately, she herself submarined an otherwise professional presentation. Number one, she used PowerPoint. I don't care who you are or what you have to say, a series of dull slides with 7-10 bullet points each spells B-O-R-I-N-G.
Number two, laser pointers must be used with laser-like precision. It was sometimes difficult to tell where she was trying to direct her audience's attention on her slides. Worse yet, every time she used it, she was late turning it off. As a result, she habitually came close to blinding audience members sitting to her right.
Number three, she lost track of time. Slides can do that to even experienced speakers. To compound that problem, she brought along an assistant who called out loudly when she had 15 minutes and five minutes left. Bad move, particularly since there was a clock on the wall. Even if she were visually impaired, I would suggest a more subtle signal. The capper came when her time was ending and her assistant horned in to say the time was right for Q&A. Our presenter begged to differ, said she had one more point to make (zipping through three slides to do so), and continued. Which made me wonder -- why did she bring this guy along if she didn't plan to use him? Or did he just try to insert himself ham-handedly to her surprise?
I did not get to connect with her one-on-one since I had to leave shortly after she finished and she was engaged in conversation with other attendees. If I had had the opportunity to talk to her afterward, the first thing I would have done was compliment her on her passion for the subject. To avoid diluting that obvious strength in the future, I would have then recommended losing the PowerPoint and losing the guy who hindered rather than helped. Let those strengths shine.