To make your writing clearer, use the active voice. Your sentences will be shorter, sharper and easier to follow.
My mother baked the cake-active
The cake was baked by my mother-passive
By using the active voice, you sound as if you are in control of your writing. This helps the reader trust what you are saying. When you use the passive voice, you can sound unsure.
Passive sentences are generally longer and more wordy. They are often used by politicians to soften a negative message.
So, to add more punch to your writing, use the active voice.