One important thing: u have to know the Map!
If u know the map u know where people go, where they camp and where they think they are safe... Try to play same map several times and u will be better with time.... try to shoot in 3 Bursts, best for beginner is to buy Xem 8 Wt, upgrade it and shoot in zome and 3 Burst (is automatic) u will be better with time... Try to shot other Humans in the body (if u cant aim good) and shoot wolves in the head (the head of them is bigger)
As wolf there is a good move u can make: if a wolf attacks u with jumping attack jump to the right while u fly turn around to him and attack (right mouse) if u hit him with this attack make a normal attack and other wolf is death.
If u are Human and wolf comes to u (is near u) dont transform, if u transform u will die while u do, just headshot the wolve it will fall fast if u hit. (this is what u have to practise)
If u are Wolve and Human attack u dont run direct to him, jump and run edges to avoid his bullets.
Hope this tips may help u.