Resize, rotate your image to "fit" in your hand

Once it's where you think it should be, hide your "pyramid" layer and select your FINGERS ONLY

Copy and Paste your fingers to a new layer, move the layers so they are in the correct order, then highlight your Backround layer

With your backround layer highlighted, click "select subject". Hopefully this will select your entire person. If it selects more or less, use one of your selection tools and use the "shift" or "option" to add and subtract from your selection. Copy and Paste to a new layer

Open your background image in Photoshop, the go to "Select - All" Copy and Paste it into your image, resize and rearrange the layers

To Save and turn into Canvas as well as get it on your WEBSITE:

File - Save a Copy

Change the FORMAT to JPEG

Click Save

Then click OK