There is buttons for inserting image over the text field when writing a new post. just click it and insert URL to picture.

I have used it too to design tartan for Finnish kilt association. We will get it registered weaved and made to kilts when we really get the association up and running. It's pretty expensive though, you can read the prices from house of tartan. And weaving and kilt making costs a lot more... but if you really want a kilt in your own tartan I think the money really isn't the matter. And when we get the tartan registered, we would be proud if somebody else wants to wear our tartan ;)