I taught college for about a decade of intro classes, and collages are largely first projects in photoshop classes since it explores initial tools and functions like selection, masking, extracting, color adjustments, paint brush, layers, colors, foreground and background color, move tool, lasso, resolution etc. What I would implore you to do while getting lost in tools is bring meaning to your collages so you communicate something. Our projects essentially consisted of taking an emotion or idea, then communicating that within your collage using found imagery, scanning and tweaking them. After turn-in, we'd have an optional constructive critiquing session, where we can guess and provide feedback on the meaning and imagery used... Good collage subjects include ideas or emotions: Love, chaos, anger, loneliness, jealousy, happiness, pain, depression, victory, triumph... Bad collage subjects include nouns or objects: my dog, parents, best friends, Hawaii, space travel, sports. If for some reason you're dead set on using your dog as a subject, get over the hump by picking an emotion or idea, like love, then using images of your dog to communicate it. More on reddit.com

Hi! Curious, did you ever learn the proper method for this? More on reddit.com

Sorry, I don't know how do this More on reddit.com

Put multiple square frames on the same page of your project. Then upload pdf's of your IG posts and pop them into the frames. If you want to link you will have to link separately each pdf. If there's an easier way, I hope someone else adds here. More on reddit.com