the rule of thumb is if you're unsure whether or not you're sharp and have to ask, you're NOTthe next 6 pts generally outlines a true sharp player, you likely need at least 4 to be within what's considered as sharp territory, also make sure the entire bullet applies1.) you are willing to shop for the best number and not just grab it from your 1st out, you also have some predictions as to the overall line movement for the bet and try to time your bets to obtain the best shopped number at its apex.2.) you actively try to find and bet middles, scalps, +ev promotions and bonuses whenever possible. a large part of this again depends on your predictions of line movement. also any +ev derivative of straight bet combinations, whenever they could be found such as correlated parlays/teasers/etc...3.) you handicap the sport w/out the aid of the seeing the lines already in place, you constantly use tools such as datamining, insider knowledge, statistics and winning subsets to help you improve your handicapping. you also present value the bet after the game is over and see how accurate your original cap was and how you can further improve the process. this is then factored into your next handicap w/ the most recent results more heavily weighted.4.) when you have active discussions w/ other gamblers whom you respect to be sharp (or reading their books or posts), you're more interested in discussing and learning their winning methods than just to obtain their picks5.) You consistently can beat the average closing line/price 6.) you have a bankroll set aside for gambling purposes only, and have kept detailed long term records of all your bets. you have won consistently over the long term at the sports that you're presently betting (refer to your detailed records), and you have cut back or ceased altogether betting on the sports that you have not consistently demonstrated a profit in. you use some derivative form of kelly criterion to help you size your bets according to the estimated edge based on both your current calculations and previous records.