Welcome from a bit north of you Andrew.
Probably best to post in either the 'Aviation' general section, or maybe 'Technical' section, possibly in the 'Engine' threads.
To post pic, first re-size to no more than 800 x 600 pxls.
Click the 'Go Advanced' button on the relevant forum page, and then click on the 'Attach Image' button.
A new box will open, where you can 'Select Files' from your computer, where each image can be selected individually. Then click 'Upload Images' and, when finished, click 'Done'. Then click 'Post Quick reply' and the post, with images, will appear.