Thank you Hristo for your help. But I am still have a few questions.
1. So, for styling strip item I should use only
ImageShape, am I right? And for border, I should create image with "stick", right?
2. Which format, which size of image it should be?
3. How I should arrange "stick" on an image? For example on an preview I see border from left side, but on original image it is on the top. Also, how it should be arranged for making border on top, right or buttom of a strip item?
4. Do you guys have some tutorial page that covers all of these questions?