Boris, there is a upload images link way up to the top.

Click on that, have you images saved in JPG format. I name them 1,2,3,4 just because it's easier to remember when coping the url.

After you upload the ones you want it will give you a URL to copy. copy and paste it in here. change the word in front of jpg to 1.jg and so on till you pics are viewed.