ALL THE SYMBOLS - because I'm Astrid and you love me!
❣ - hands-- Hiccup's hands are pretty large, and due to working in Gobber's shop he's not spared the callouses and roughness of the average viking. His nails are kept short and his cuticles are pretty jacked up, also due to working in the shop. At any given point, at least two fingers have pricks in them from stitching saddles.
❤ - voice-- Hiccup's voice is usually pretty low and calm, but it can get pretty loud if he's upset, angry, or needs to get someone's attention.
۵ - feet-- Hiccup feet are pretty big-Or well...his foot. He is pretty self conscious about his right foot and wouldn't be caught dead without at least a sock, (certain situations don't count), and he often makes the joke of having 'two left feet', in regards to not having one at all.
❦ - lips-- Hiccup has a habit of chewing, sucking on, and licking his lips, especially when he's deep in thought, so most of the time they're chapped or cracked.
ø - eyes-- Since he likes to wake up early and go riding / mapping, and usually stays up late working on new tail and flight-suit ideas, he tends to have dark circles frequently, but if Astrid catches them, she does her best to ake sure he gets some proper rest. The circles will be back to in a few days, though.
ღ - nose-- Hiccup used to hate his nose, thinking it was pretty large, especially how round it was; but following events of HTTYD 2, he has come to appreciate his nose, seeing as it is the only feature he really shares with his father.
♮ - body type-- Beneath all that leather, his body type is the same as it appears. He is still fairly thin and lanky, but he is a lot more toned, and his chest and arms are well-defined and muscular.
♫ - singing voice-- You don't want to hear Hiccup sing...Your ears might bleed.
✮ - sleeping habits-- As mentioned above in the talk about dark circles, he doesn't have a regular sleep schedule. He probably doesn't even sleep 3 hours a night, unless he's forced to get a goodnight's sleep. Late to bed and early to rise, he has too much to do than to worry about sleep.
✉ - texting habits-- This would have to be a modern!headcanon: Hiccup would definitely be the type to see a text, set his phone down with full intentions of replying and then completely forget to reply. He would get better if Astrid brought it up, but he'd fall right back into habit after a while.
✿ - laugh-- Hiccup's laugh is goofy and heart warming, even though he's slightly embarrassed by it, he can't help but to chuckle and laugh, I mean when something is funny, it's funny. If he gets really tickled at something, he will break out into an uncontrollable fit, and even snort from time to time.
✍ - writing style-- Hiccup is a sloppy writer. His handwriting is hard to make out, and due to trying to get all the information possible down as quicly as possible, he has a tendency to leave out details, and only put what's majorly important.
⌨ - time-wasting habits-- He is very easily distracted, and his time management skills are pretty poor, so anything can become a 'time-wasting habit'. He will start on project and not abandoned it until it's finished, even if it runs way over the expected time it will take.
❅ - keeping warm/keeping cool techniques-- Hiccup is warm-natured so he rarely gets cold, but when he does, man is he cold! When it comes to sleeping, he just curls up next to Toothless if he's cold, that way he can keep Toothless warm as well. Especially now that he has a more toned body, he's not too ashamed to show it off, and if he gets warm, the first thing to go is the leather, the second being his shirt...And that's about where he cools down substantially, and if he's still warm, he just takes a quick dip.
✎ - taste in music/literature-- I think this would be a more of a modern!headcanon, reply too: He would really like classical in music an pretty much any kind of classic literature, but he'd also really enjoy alternative rock and comic books!
☤ - self care/first aid habits-- TIS BUT A FLESH WOUND! He doesn't really freak out over anything, so he usually just gets by on the basics; making sure a cut or something won't get infected or irritated further, and just trying to rest anything like a sprain, until it's well enough to work with and BAM.
✪ - favourite food/eating habits-- He freaking loves break, like if he could life off of bread, he probably would. He also really like vegetables. How unviking-like! He will eat meat, but he hates eel, and fish just gets old after a while.
☁ - ideal holiday-- One spent with none other than his closest friends and family (*sobs into the distance*), and Toothless of course! Just relaxing and reminiscing of good times with those close to him. Maybe a little snuggling by the fire in meade hall, with his lady, after everyone else has retired...But please, no more Yak Nog.
✄ - nervous habits-- BItching the skin off of his lips, chewing on the inside of his cheek, and occasional nail / cuticle biting.
☂ - sadness-- Before HTTYD:Hiccup was easily depressed, though not easily discouraged. He felt like a major disappointment, and that just kind of got him down, even though he fought through it, to think of ways to make his father proud. He also frequently wondered what his mother looked like and was saddened that he had no memory of her, wishing that he'd at least been able to 'meet her'.-- After HTTYD 2:He still can't seem to shake the guilt of his father's loss being his fault, and even though his father had told him many times how proud of him he was, he has the tendency to fall back on the thought that for the last bit of his life he was not proud of him. He is heavily bothered by the loss and even the sweetest of memories upsets him greatly. He tends to either lean on Astrid or isolate himself when he's at his worst.
❈ - ideal birthday-- Nothing big and fancy, it's not that great to celebrate. Hiccup would just prefer a normal day with his mom, his lady and his dragon!