The main thing I would say is that the marking is not too harsh, as long as you get your tenses and cases right for your verbs and nouns and make sure all your constructions are super secure. Vocab might lose you a few marks but it's not drastic and you probably learnt a fair bit for paper 1 (plus they keep it fairly straightforward, except for the odd curveball but guessable word - you're def not expected to know as much vocab english to latin as you are the other way around). The main thing I would say is don't be afraid to mess with the phrasing a bit if it's throwing you off. Subordination (moving full stops and sentence breaks) is totally ok and even encouraged!
For example:
if the english was "the general had the barricades removed by the soldiers in order to move the camp"
your latin for the first part could be quite complex and involve curo + gerundive for 'get something done', however equally you would get marks for rephrasing it into an indirect command if you felt more comfortable with that construction. Both would potentially get you a style mark.
Again for the second half you could use a purpose clause with "ut", but if you used "qui" that would be considered stylish, and you could even go in for ad + accusative gerund if you wanted and that would def get you a style mark.
You could EVEN go in for "the soldiers, having been ordered by the general that they should remove the barricades, moved the camp".
That was pretty long-winded, but my point is that there are work-arounds, and sometimes these even benefit you further. But obviously focus on your core constructions and grammar because unfortunately even if you do something super stylish, if there are any errors at all, you won't get a style mark!