Crested/Gargoyle Geckos! :)

Oh no, they won't stay tiny the first three years, they'll grow during that whole time, but they should be full grown by the time they are 2-3 years. (So about 40 grams +/-... I think gargs average somewhere around there unless they are chunkier. ^^))

Yeah,the CGD is generally liquid looking when mixed with water as per instructed.

Awww, congrats!! And 13 grams isn't THAT tiny. XD My friend got a crestie from the last expo we went to and he was only 3 grams.

I normally mix my CGD so it's a thicker liquid... kinda like a milkshake. ^^ That's how my geckos seem to like it, they don't like it too watery. Every gecko's different though!

Ohhh wow, he's so cute!!!
Gee, he's got everything! A pinstripe, looks like he's got nice laterals and some small dal spots too! Looks like he's got fair proportioned crests too! ^^
Such a cutey-pie!! <3<3<3

His polka-dots are adorable. ^^

Laterals are the white bars/stripes it looks like he's got on his sides. At least from the picture you posted it looks like he's got them. ^^

I'd turn off the heat lamp, they don't need a basking spot and do well with temps from 68-75* F, too hot temps, like 80*F and higher can stress them out and ultimately lead to their demise. ='( And he is so adorable. Most people don't approve(breeders) about the longer head, but I LOVE the longer faces as opposed to the shorter heads.
I love his set up, it looks pretty nice, but more fake plants would always do well.. They like about 50-60% of the whole cage covered with leaves so they have plenty of hiding spots to get away from scary open places.

And mine always have their same favourite sleeping spots. They do absolutely nothing during the day unless you take them out to bug them. Only at about 11PM do they start to wake up. It is quite odd if you're used to a reptile with eyelids to see the geckos sleep with them open. Have you seen them lick their eyes yet? Normally they will if you spray them with water. And since you have a 10g, it looks like it might be horizontal and it's a glass one with a screen lid? Or am I seeing it wrong in that pic? They do better with vertical tanks, but as long as the [adults] have at least 15" of vertical climbing space, they're fine. So right now your little dude should be good, but he might want something taller when he gets bigger.
But if it's a glass tank with a screen lid, you might want to mist his cage 2-4X a day. Babies need more humidity than adults. I generally give my gecko's cages a good soak at night and that's it, but that seems to be what works for them. I give three of my six water dishes because those three actually use them.
Theyr'e SUPER easy to take care of once you get the hang of it. ^^ Thought I'd just give you some tips though

Yeah, they don't need a temp gradient at all .^^
No, not different, I've seen ones with long heads and snouts like yours and also ones with short heads and snouts as well. It all depends on genetics(maybe, crestie genetics are too messed up for them to be THAT reliable) and incubating temps. ^^
Yeah, that'll be plenty enough of room for an adult. And like I said, for now the 10 gal is fine vertical.

The best thing about these guys is that they're rather sturdy critters from the moment they hatch to adult-hood! Pretty forgiving when it comes to mistakes in husbandry too. Tons of fun though! My first type of reptile was a crestie, though I really just recently started to really appreciate them for what awesome critters they are! Have fun with him!

I normally do have their food on the floor, but they'll eat from anywhere really, as long as you keep the food in the same spot. And he might not eat for a week or two for you as he's settling in, so just offer fresh CGD every 2 or 3 days and the dubia once or twice a week. Do you have calcium and vitamin to dust them with? Stuff without much D3 is best and I recommend and use this and all my geckos like it with their buggies: http://www.pangeareptile.com/store/calcium-plus-all-in-one-supplement.html

When I feed bugs, normally I just have the bugs in a critter keeper or a different feeding container so I can shake them all up in the dust and my geckos will all eat from tongs, so that's how I feed them bugs, but Kess and Beast will also chase them if you put them in a container with bugs. He will eat them out of a dish if he knows they're there!! I've done that before when trying to get my male Dagger used to eating bugs. He was tong and feeding container shy so I just put the crix(you can use dubia of course) in a small glass dish I got from the dollar store and he ate them like that for awhile.

Aw, about the spraying, he'll get used to it. You don't have to spray him directly either, it might surprise them, just give the whole cage a nice misting at night. It bumps the humidity up enough for them and they also have a chance to drink off the leaves and sides of the cage.