Ok,
1) to change the layer of the insignia you have to make sure that, the insignia is the item you currently have selected. When you first add it to the drawing it is automatically the selected item until you click on or add something else. To re-select the item just click on it on the canvas. Once it is selected click on the transformation tab ( #1 in the picture below ) and you will see the layering control ( #2 in the picture below ) There is a button to move move the layer up one layer at a time and one to go down one layer at a time. There is also a button to move the item to the very top layer and another to move it to the very bottom layer.
2) To Mirror image an item, if you want two or more of the item, make sure you click the multiples button on each category of items you want muliples if you want just a single item leave it or change it back to single ( #1 on the picture below ). Then to Flip it you will again need to go to the transformation tab and you will see the flipping tools ( #2 in the picture below )
3) The lens flare and glow effects are done with variations of highlighting and shading, we affectionately call zyping around these parts. Here is a tutorial on highlighting and shading done by the HM Guru AMS: http://www.heromachine.com/forum/tips-tricks-how-tos-and-guides/how-to-highlightshade/ … Once you get the hang of it you can start to play around with the size and shape of the highlights to create different effects.
4) and Lastly here is a tutorial on how to post your characters by yours truly! http://www.heromachine.com/forum/the-heromachine-art-gallery/how-to-post-your-character/#p2302
