One helpful tip for making flawless selections is to get familiar with the Select and Mask workspace in Photoshop. Say the selection you made isn't perfect, or you change your mind about what part of an image you want to select. With the Select and Mask workspace, you can adjust your selection to get it just right. If you change your mind later, you can alter your layer mask to reveal a new part of the image.
Try photomontage and collage.
Art history and graphic design fans know that collage has been a popular way of combining images for well over a century. There’s no shortage of inspiration for this style of project, from rebellious Dada artists like Kurt Schwitters to photographers like Man Ray to modern-day book cover, package, and brand designers. Collage art is everywhere.
While it’s very similar to collage, photomontage is a separate style of image-combining that aims to create a unified picture out of many different photographs. Unlike some styles of photo editing, the goal of photomontage isn’t realism — the juxtaposition of elements is part of the charm. In fact, the subject matter is often completely surreal. If you’ve ever seen, for example, an image of Marilyn Monroe, Madonna, and Lady Gaga bowling coconuts on a tropical island, chances are pretty good you’re looking at a photomontage.
Collage casts an even wider net than photomontage, with no firm boundaries around what kind of materials to use or what kind of image to produce. Many collages are abstract, with no specific focal point, while others may look more like patterns or designs made out of scraps of images or other materials. You can make a collage on a canvas or artboard, or you can collage directly onto practically any surface.