My advice is exactly like paradigmsearch's, except I have it on good authority that they they prefer Danish pastries to donuts
Seriously, according to a previous thread that I can't be bothered to dig out now, according to Simone, one thing that can increase your chances of getting HOTD is to make sure all your photos are properly attributed, even your own.
HP would not like to showcase a hub with copyright infringement (using photos that you don't have a right to) on the home page. You don't have to attribute your own images, or public domain ones, but if you don't there is no way for HP to know that they are your own photos.
Not saying that attributing all photos will get you HOTD, but not doing so will probably make certain that your hub doesn't make it.