the thing about cigars.. first, when you say cigar im assuming you mean an actual cigar, in a humidor, from a tobacco shop that costs more than a dollar... lol. Otherwise they are blunts. Cigars will work but only some. You need a piece of paper to roll with first, then wrap the leaf around it.
Dont bother slicing it open, just moisten with your spit and start unwrapping from the mouth piece. Garcia Vega Crystals work, they are the only real cigar ive ever rolled with and they are actually borderline blunt IMO.
Those look like real cigars and probably dont have any paper in them, just the leaf wrapper. give it a shot tho.