Warhammer is one of my favorite worlds AND one of my favorite RPG (well 2nd ed is anyway). If you are starting out as a beginning character - accept that you "suck" and roll with it. We have had great times with battles where everyone including the bad guys all miss in a round. You’re like a 1st level peasant when you start out, so just accept it

If you start with some XP you will not be as bad, but even mid-level of experience heroes are not overly powerful. Fate and Fortune Points can help though.
Now then some notes about WHFRP 2nd ed - All of you skills are based off your Attributes… so if you have an Agility Score of 31, and you have the Silent Move skill, then you have a 31% chance of Moving Silently. Most hand-weapons have the same affect, so instead of listing out longswords, warhammer, mace, or an axe, they simply list it as ‘Hand Weapons’ which is cool in my mind. When you run out of Hit Points (Wounds in WH) you don’t automatically fall to the ground nor do you ever go into the negatives. Instead you take “critical hits” that do various horrible things to you (like get cut off, etc) AND then you fall to the ground dying.
In the last game I ran we had a Human Noble who became a Duelist, a Human Peasant who became a Militiamen and then a Veteran (he also thought that one of his dead friends was haunting him as a spirit and would talk with said friend at the ‘worst’ times), a Human Zealot who became a Flatulent (and an irrational desire to burn everything to the ground) and a Dwarf Mercenary who became a bounty hunter (and thought that the Empress of the Empire was secretly in love with him and that she was sending him messages in the clouds… so he was always looking for them).
I can not say enough good things about Warhammer and I generally HATE role-under % systems... but for some reason with WH I totally love it