Hi! well, I'll try to help you in the nicest and shortest way. I tried to sum it all up in two points:
1) You're too short to be a fashion male model (I'd say 180cm is a very rare exception some agencies make when they find someone who consider special, but it usually takes more inches for any boy to be easily successful as a fashion model)… and you're barely close to exception borderline, and even if you were 180, I'd wouldn't say you could feel lucky at all... 'cause, like I said before, that's very difficult to happen, and personally I don't even see any model factor on you… and that takes me to my second point:
2) Your look it's not on the commercial side of modeling, not on the high fashion either. There are some models that somehow share both of these characteristics I'm going to mention, so they can work for both markets, but if we have to divide it, it would put it this way:
Commercial boys: Stereotypical sexy guys, usually hunks with perfect bone structures, bodies and proportions, and beauty closer to pedestrian aesthetics that will make it easier to relate to for costumers.
High fashion boys: Boys who are not that hunky, in fact they are usually not athletic at all… but their faces reflect a type of beauty that can go from a look closer to the commercial aesthetics, or maybe something more quirky, since high fashion allows itself to play with unusual representations of beauty.
… but I'd say, the thing most successful models have in common, is their "model factor" (as Tyra and cheesy as it sounds, I know, but I can't find a better term
). That…"something" that sets them apart from "regular people" like you, and me, and many other members from here. For short models it gets even more difficult, since they not only need to stand out from regular people, they also need to stand out from other models that could be as gorgeous as them, but way taller… so successful shorties really need to have that
Je ne sais quoi about them… that extra aura, an indefinable quality which makes a model the most captivating from a full room of competition. That factor could be related in rare cases to personality, but the special physique is a must. Proportions is another subject. A perfectly (or close to perfect) proportioned face and body surely helps a lot, and you don't have them, and that's very important for the industry 'cause good proportions gives you good angles, and the more good angles you have, the more photogenic you are, the more chances you get. Sometimes, in high fashion, they allowed themselves to hire not so "proportioned faces" all the time, but again, at least their bone structures are interesting enough to call the clients attention. You say that your face is not pretty, but I wouldn't be so harsh on myself if I were you… maybe you're just not born for modeling
Hope this helps, and good luck!