Repeat the 5 steps for any outline images you have in your design, like the cat above.
1. Using the Selection Tool, click on the image that has been converted into vector lines.
2. Click on Properties Tab
3. Click on Stroke and make it 0.1pt then click on the color box to the left of the word Stroke
4. Select RGB Red
5. Click on the box to the left of Fill and select No Fill (white with red line through it)