How to Annotate

First you will need to take an image or a blank background to Image Magick in order to annotate on. You can make one on the IM input page by scrolling down to the bottom of the page and under size, put in an image size (you can always trim it if it is too big). Under Format click xc, and under Meta type in a color name. Then scroll up to the top and click view. Once inside an Image Magik Studio, you will see rows of links across the top of the page. Click on the button marked Annotate. You will be taken to a page with a text box and some features.

First you will type the letter of your dingbat inside the text box (remember it is case sensitive).
In the Box marked offset, you will set the parameters of where you want your image to appear on the page. This is trial and error and you can hit the back button on your keyboard and change the numbers if you don't like the location. More on this subject below.
In the box next to that click on North. If you just have one image you could just click on Center and have the image center without setting any offset.
Under Fill color type in the color you would like. Most dingbats are transparent however, and black would work best to get the outline of the image. A solid color dingbat can be painted with this option. Other dingbats have to be painted or annotated on a colored background to get the color. See the How to Paint section.
Under point size type in the size you would like your dingbat to be. There is no universal measure, this too is trial and error and different dingbats come out different sizes. The number 24 is in there already. This is small for writing words on images. You might begin with 50 and see how the image comes out. Then make it smaller or larger as need be. If you think it should be twice as big then hit the back button and type 100 in there.
Under the box of fonts there is a space for inserting a URL. This is where you will put the ttf URL of your dingbat. The fonts are used for writing words on your images. But if there is a URL in the box below it, that URL will over-ride any font that may be clicked on.
An optional parameter that you can use to manipulate your dingbat is Scale at the bottom of the page. 1.0, 1.0 is already in there. The first number is for width and the second for height. A number of 1.5, 1.0 tells the computer to make the image 1 1/2 times as wide as the height. 1.0, 2.0 tells it to make the image twice as high as the width.
Another option is rotate. 0.0 is in there now. 45 will rotate the image 45 degrees to the right and -45 will rotate it 45 degrees to the left.
Once all your parameters are set, click on the button under the text box marked Annotate.

Setting Offset Parameters

In this image I have tried to show how the offset parameters work. The numbers +0+0 that appear in the Offset box stand for width and height, or how far in pixels from the left and how far from the top. But other things factor in to where your image actually appears. I used these boxes to show this.

The small black box in the center is set at +0+150 North, point size 24, on a 300x300 background. I like to work from North throughout because it is easiest for me, especially when I'll be adding several dingbats to one page. North is the top center of the page. You can set the width as a negative number to go left of center or a positive number to go right of center. 150 is the center of 300 but you will notice that the little black box in the center is aligned with the center and falls just below it.
The next box, the red one is set at +0+150, point size 34. Again same place but larger.
Green is point size 44.
Blue is point size 54.
The yellow box is the same as blue with offset +0+150 point size 54, but rotate was set at 180 degrees. So the image was rotated until it came out on top of the 150 mark and if it were an image it would be upside-down.
The brown box around that again all the same parameters but scale was set at 1.5, 1.0 to make it wider than the height.
Finally the orange box was set at scale 2.0, 1.5, with all else the same.

I hope this helps you with your offset numbers. Just remember that point size matters too in how the final image will appear.