Nothing is more uncomfortable for a barista than you hanging around the counter without giving them any idea as to why you haven't left. Most coffeeshops' computer systems will prompt a barista to either print a receipt or decline. Unless you've explicitly asked for one, a barista will often opt to not print yours. Ask! They're great at coffee but awful at reading your mind.
Unless you're in a life or death situation where you need your phone while ordering coffee, the least you can do for your barista is give them 5 seconds of your undivided attention while you place your order. I promise this will make it less likely that your drink has a mistake and it will speed up the line.
5. Try Not To Distract Us
Most baristas are more than happy to speak with customers, but when we have a line of drinks wrapping around the counter the last thing we need is someone trying to micromanage their drink's creation.
I promise you baristas do not have secret mind-reading powers! As much as you'd like them to, a lot of them won't know your order off the top of their head. Calling it the "(insert your name) special" won't help them out either. Baristas love their regular customers, and they try to make it a point to remember your usual order as best as they can. However, if they don't, please don't be offended...they see hundreds of people a day with complex, unique drinks just like yours.
For all the nonsense a barista has to put up with on a day-to-day basis, every customer needs to know how far tips go for the people making their coffee. For most coffee shops, they playfully label the tip jar with "gas money," but it's honest. Most baristas buy groceries, fill up their gas tanks and pay bills with their weekly tips. If you have $5 dollars to spend on a coffee made with your extreme specifications, take the care to give that extra .50 cents to the underpaid person giving you your coffee fix.
Unless you're at a McDonald's believe me, there is no 'Frape' on a coffee shop menu. A lot of baristas take extreme pride in their craft so calling one of their beverages a 'frape' is like throwing a drink in their face: rude!
It is hot/cold -> size -> # of espresso shots -> type of drink -> special snowflake specifications when ordering your beverage. Without this flow we all get confused and things get lost in translation. Meaning your drink isn't the top-notch quality both you and your barista want.