Like wine,if drank/smoked calmly while sitting there focusing on the experiance,the first flavor,smell,taste of something even for a split second is used to describe the flavor profile.This shouldnt be considered work,it should be done in a relaxed manner.
Working while smokeing/drinking,eating while smokeing/drinking,how you feel,the surroundings,etc etc all have an impact on your cigar/drink results,if at all just slightly.

A good way to try this is close your eyes after the cigar is lit,slowly take a puff to desired amount of smoke you would consider a mouthful.Let it slowly come out of your opened mouth on its own and then breathe out your nose while tasteing(that opening and closeing,tasteing your tounge movement we do when something just tasted great).
The first flavor that comes to mind without think,the first thing the taste in your mouth reminds you of,thats the profile you would add in a review if describeing the cigars flavor profile.The finish...long short is the amount of time before the flavors leave your mouth before takeing another puff...sometimes its very long sometimes very short.The flavor you have may be different from the initial one you were reminded of in the initial puff.

Some cigars will change in flavors 1/3rd,half way down,and last 1/3rd of the cigar till the nub,this is what makes a cigar multi dimensional,varying flavor profile throught the entire cigar at different points.One dimensional would be the same flavor throught start to finish.

It is like wine and yes there are some flavors that people just cannot pick out so whats the first thing it reminds you off would be a way to describe it.Some of us will not experiance the same flavor profiles so it shouldnt be written in stone that you got a bad stick,a fake,or not fresh stogie because it doesnt match.Its just a basic area to expect/describe.

Wine blindfolded is a good way to pick flavors.Of course there are 4-5 methods in tasteing that should be done in order to describe the profile.Cigar smokers sometimes breath out the nose while tasteing there tounge or chewing motion to taste the smoke better.I do this but do not smoke the entire cigar blowing out my nose nor do I blow the entire mouthful out my nose,heck,my nose would be blowing brown snot if I did this.

Hope this helps,try it.