It's the Basic for the newbie in pixlr .

Before anything Open your pixlr first ..

How to Insert PictureS

Step 1
if you will be making book cover , put the size 511 X 800 for HD .

Step 2
make a Background or texture .

Step 3
if you want to insert , for example a PNG picture , click file .

Step 4
click Open Image and select the picture you choose .

Step 5
after selecting the picture will appear on your screen .

Step 6
put your attention to the layer table at the right side .

Step 7
drag the only pic inside the layers table to the cover you made .

Step 8
you can resize it by clicking edit at the ribbon and select free transform ,

Step 9
After resizing , Save

Xoxo
Tutor RiriSs