Seattle Scissor Sandwich
1. Become a member join
Section at the back of some books index
Go beyond, as expectations exceed
joindexceed - Alteration 10: Curse, in a way - jinxed

2. Big top swing trapeze
The fourth Marx zeppo
Motionless and ready to strike poised
trapezeppoised - Alteration 2: Four-sided shape - trapezoid

3. Fonzie’s cousin chachi
Like John Woo and Jackie Chan chinese
Sushi wrapper seaweed
chachineseaweed - Alteration 8: Power tool - chainsaw

4. Group of lions pride
Dame Judi dench
Game in The Seventh Seal chess
pridenchess - Alteration 4: Hero's prize - princess

5. It has clearings forest
Try very hard strive
Calf meat veal
forestriveal - Alteration 1: Cultural Celebration - festival

6. Movie with an erotic pottery scene ghost
Repeated word in Forrest Gump catchphrase stupid
Exactly alike identical
ghostupidentical - Alteration 11: where many babies come from. - hospital

7. Oily freshwater fish trout
Factory-direct retail location outlet
Salad staple lettuce
troutlettuce - Alteration 3: Game of chance - roulette

8. Peanut or lentil, for example legume
Reactor core mishap meltdown
Change a stock’s recommendation from “buy” to “sell” downgrade
legumeltdowngrade - Alteration 9: Summertime treat - lemonade

9. Smoky flavor in Texas barbecue mesquite
Male voice below alto tenor
Of Scandinavian mythology nordic
mesquitenordic - Alteration 6: Magazine not aimed at women - esquire

10. Vegas numbers game keno
Belt hole notch
Tight necklace choker
kenotchoker - Alteration 7: Opportunity, at times - knocker

11. WWII acronym for a snarl snafu
Resistance, to the Borg futile
Luxury car brand lexus
snafutilexus - Alteration 5: It has chambers - nautilus

Alphabetize answers, then look at last letter
chainsaw
esquire
festival
hospital
jinxed
knocker
lemonade
nautilus
princess
roulette
trapezoid

The answer is: WELL DRESSED