If you want to use the brickboard image library instead of posting elsewhere, first reduce the image size to less than 61.4K, then in the post/reply window click the 'upload select' which will take you to the image library.

A new window will open for the image library and you need to first choose the most appropriate section for your picture - cars, personal, or technical. Then just below those selections you will see 'add a new exhibit' click on that and upload your image.

When you are done you can close the window, which should take you back to your post/reply, and now if you click on 'image library/upload' your image will be top of the list and should show in the window (remember which area you loaded it) - click on it and the URL will be added to the post.