span class="large"To solve the problem set out in Step 4, I've used Photoshop to help me. I selected Edit-gt;Transform-gt;Scale; then locked the aspect ratio of the Layer containing the four white lines; and then I scaled the Layer (with the white lines) until the base of the tree was sitting at the intersect of the lower horizontal line and the line on the right.br/br/Go to Step 6 to see the final "fix".../span