I agree with Zathros, don't be intimidated. Everybody starts somewhere.
Pick something you like, something you would want to have as a model and go for it. My very first model was also a rather difficult one. I picked one of the shuttles from
AXM Paper Space and it was an enormous challenge. Following that was a bunch of mechs. I made two utterly silly mistakes when building the shuttle because I didn't fully understand the instructions, but these became very clear real fast - so, re-print the pages and do it again.
As with any hobby, if it's not fun, it's not interesting and not worth the bother.
With the massive amount of models around, it should be easy enough to find something you "want" to build. Once that decision is made, just go for it. Really, it doesn't matter if you make mistakes, or if there are seams or fold marks, or errors. So long as you're enjoying the process you learn from these mistakes and the next build is better.
It takes time and practice and patience to get as good as some of the people here. In a few cases (no names) their ability appears to be inate - and as with anything there are always going to be people who are at the top of the game. Either from natural ability or high skill levels. One can only but admire what they do and then carry on.
The very worst thing that one can do is to submit to fear that you're "not good enough" and that people will look down on you. While this is the case in some fields (such as gaming), it is not necessarily true of all areas of endeavour. Oh, I don't doubt there are snobs, I've met a few in other modelling forums. People who seem to think everything should be a DaVinci - well, that's what one's middle finger was invented for.
I've not seen anything of that nature here, the members of this forum are very encouraging from what I've seen, and more than a little helpful.
Don't be intimidated. It isn't necessary, and in the end it is self defeating.
Looking at some of the models I've made, I can see obvious errors on them. But, I made the thing, I learned from the mistakes, and I enjoyed making a mess and making the model.
That is what it's about in the end. Enjoying yourself.