Upload the image to a website somewhere (most use photobucket or imageshack). Copy the id of your ship and click on the CP amount in the sidebar. At the top of the new page choose the Exchange CPs option. Scroll down a bit and you will find the custom image section. Choose Ship from the drop down list, and paste your ship id into the relevant field. Then copy the image urls for your images and then paste them into the correct fields for the 100x100 and 400x300 text boxes. Then click submit and the Art Team will look at it and accept or reject.