How to alter picture height and width

There's two ways to make a picture the right size for the sidebar.

1) The first is to import it into blogger in the smallest size. I often import the bigger one for a post, and a small one for the sidebar, then once I've got the 'address' of the small one, I either delete it, or copy and paste the html for it into a permenent 'draft' post.

or

2) The second way, that I know of, is to specify the height and width in the sidebar blurb. After the closing of the quotation marks, but before the closing 'V' shaped brackets, write

height="" width=""

I've found the width of my sidebar is about 200, and to keep the picture in proportion, I usually use a width of 150:

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