Rockface

You’re clean, you smell nice, who’s going to be looking at your hands?  Well, everybody, to be honest.  From that office hand-shake, to your dining companions.  Buy a cheap nail-brush and use it – keep your fingernails clean.  Oh, and short.  You’re not a flamenco guitarist (probably), neither are you a wizard (definitely).  Keep them neatly trimmed.

If you bite your nails, do your best to stop.  There’s a load of over-the-counter products which you can paint on which taste revolting to help you kick the habit.
When moisturising your face, use a bit of your moisturiser on your hands too.  This will help prevent them drying out or cracking, and also is not hand-cream, so is therefore manlier.