We first downloaded the seascape photo into the app. Then downloaded our boat photo and sized it making sure to place it in correct proportion. (Large boat photo goes upfront in the foreground and small boat photos go in the background.)
The final step was to erase the background around our boat photo and upload our piece to Dropbox, so I could put them on Artsonia.com. Some students chose to use the drawing tool to add additional details like shark fins. This was a quick one day lesson that the kids really enjoyed.