How to insert an Egyptian or Arabian SIM card into the iphone5s?

So I know the first steps where you open the tray and then when I try to put the card it is just enormous so I cut all the surroundings of the card itself and left only the yellow part and then i put it in the tray and insert it it still doesn't work. What do you suggest to do please?!

You can replace your SIM card with nano SIM, if available.
Or simply cut the SIM with a professional cutting tool.