Hi Edith,
You are quite right, it does need to be easier to change your PDF's and customise them just how you would like.
We will soon be launching a test of a new setup wizard for KashFlow to enable you alter your PDF themes much quicker and simplify the process.
For now, if there is anything you would like us to create for you, lets start a discussion on the forum and see if anybody can contribute with some great themes.
KashFlow Product Team
Completely agree. With no knowledge of HTML and CSS, it's very difficult to create an invoice which looks the part for our business in comparison to simply creating them in Word or similar.