The following is meant to be a quick refence guide to compliment the 'Horror Know-How' panel at the Calgary Comic Expo.
Below you will find helpful tips to improve your own horror films, and increase the chance of exposure and distribution.
This guide compiled by Justin McConnell of Unstable Ground.

Atmosphere & Suspense
The films to the right are a non-comprehensive list that make up a fantastic education in the use of atmosphere & suspense in horror. Watch these films and pay close attention to how each scene is built, how sound design is incredibly important in each case, and what can be accomplished by letting the audience use their imagination. The power of 'hinting' without 'showing'. The fear that lives in shadows. Enjoy!

Fake Blood
Blood can be made in many different ways, from the incredibly cheap (Kool Aid Blood), to the much more expensive & professional (blood powder). The list to the right is a resource to get you making the best blood you can.
Production/E&O Insurance
Safety of your cast & crew is very important, and producing with insurance is a must. An injury on set can set someone back a lot of money in medical bills, and you want to be prepared for everything possible. Having production insurance also allows you to rent much better locations.

E&O Insurance, on the other hand, must be purchased before any serious distributor will acquire your film. There are two types of E&O: 'Occurrence-Based' (one time payment) and 'Claims Made' (yearly payment). Learn about both, as Occurrence-Based can save you a lot of money in most cases.

In addition to E&O, your film will require both a 'Title Clearance Report' and a 'DVD or Script Clearance Report' to obtain distribution.

Finally, you should always protect your scripts as soon as the first draft is complete. You can register them with the WGA for only $20 online (you don't have to be a member), and with the US Library of Congress for only $35.
Sales Agents/Producers Reps
There are many great people in the business, and some that are only out to seperate you from your money, and leave you with nothing. Be careful when dealing with sales agents, and always do your research. Ask around about them. Call other filmmakers those agents have represented, and get a clear assessment of how they operate, and if they are right for you. The best agents are also often members of IFTA (you will find them listed on the link to the right), but there are good and bad people in every business. Be careful. If someone asks you up front for retainer money, walk away. They aren't out for your best interest.
Markets
Film markets are an excellent place to sell your film, make connections, and learn a lot about the distribution side of the business. As an indie filmmaker in North America, attending AFM is highly-recommended for a crash course on exactly how the game is played.
Horror Press - Highest Traffic Sites
In the age of the internet, the best way to get the word out about your film is to get to know the editors of the top horror sites, and use professional press releases and marketing materials whenever you have something important to share about your project. Each of the sites to the right have 'contact us' sections, and beyond that, most editors are on Facebook and Twitter. Approach professionally and with courtesy, and they will likely run your press. The most common way for a film to fail is for nobody to find out about it. Their job is to spread the word on cool new horror, so help make their job easier and learn how to talk with these sites (this is only scratching the surface, there are hundreds of sites). Sample press release.
Social Media Marketing
Learn to use tools such as Facebook, Twitter, Google+, Youtube, Vimeo, Digg and more to help spread the word about your project. Facebook allows you to make Fanpages to support films, and event pages to promote. Be creative and connect directly with potential fans.
IMDBPro & Withoutabox
Both of these are invaluable tools. For $15 a month, IMDBPro lists the contact info for reps of the majority of people working in film, from the biggest actor to producers and more. Also look into IMDBResume, as a more professional profile can help the public perception of you and your work.

Withoutabox is where the majority of film festivals choose to receive their submissions. It's becoming more commonplace to submit via secure online screener via this site, to save on shipping costs of physical media.
Festivals & Conventions
Festival play is absolutely essential to spread the word about the film, gather press, and sometimes the interest of distributors. There are hundreds of genre-friendly festivals out there. To the right is a master list of most of them, as well as direct links to some of the biggest around. There are also dozens of horror conventions with film festival components.
We hope this guide helps. There is so much more information to learn, and you should never stop. There's always something new to discover. Talk to other filmmakers, take every opportunity possible to produce, and don't get frustrated. Building a career in film takes time. Be patient.