Cryptic crossword No 3,951

Across

1. Create a hybrid by attaching gator skin to back (5)
2. How's it goin', uh ... Henry? Uh-oh ... Robin, maybe? (9)
3. Washington passes substantial decree (5)
4. Bit on bar's right half: Norm approaches Woody at the beginning, before Cliff gives information everybody already had (6,9)
5. Sea change after a CEO joins Facebook: they saw the sign (3,2,4)
6. Mike requests presents, like someone neurotypical (5)
7. Hospitals suppressing skin irritation near Eisenhower's thumb (9)
8. Show techie to recompile and take off (3,6)
9. Good country is one that's secretive? (5)
10. It takes a load off to hear debuts from Everclear and Evanescence, every one succeeding (4,5)
11. Curiously appealing gift offered by Creole shopkeeper (9)
12. Racy photo taken by heartless spy (5)
13. Over 90% or more increase (5)
14. Podunk hotel? (6,2,7)

Down

1. Sorry if I put "Weird Al" at the end (7)
2. Cut mouse's tail after rat runs in the other direction (5)
3. Had a perfect score after beginning in second place (5)
4. Fourth installment of "Garfield and Friends" is in development (5)
5. Premiere of Lana del Rey's remixed oldies (7)
6. Hector, Dave, Garry ... Everyone here is dead (9)
7. At first light, go back under covers, getting a late start! (9)
8. Increase in swelling after quitting mixed martial arts (9)
9. Too dirty to broadcast, excluding the first clip from Goodfellas? (7)
10. Talk like a kid:  "pwn," "to take the L"... (5)
11. Use this to figure out the logarithm of get one hundred (5)
12. Adapt Grandma's finishing touch: stuffing made with Ritz crackers (9)
13. One short stack in IHOP:  bananas and nut (9)
14. Fusion of a retro 70's rock sound with a little bit of metal (7)
15. Small salad of lime and, say, cheese (5)
16. Marine craft from South Carolina and the western half of Hawaii gathered around borders (9)