Have a look at the qualities/ skills that firms look for in their trainees. I would recommend doing the HSF practice SJT as well, it gives you the right answer and, most importantly, why each answer is right (I know it's one firm but they look for similar stuff tbh).How do you get better at passing SJTs? I always pass WG but SJTs are a nightmare
Link- https://careers.herbertsmithfreehills.com/uk/grads/what-we-look-for