Hi, @katleya
Thank you for stopping by! Most of my collages are created with a message embedded in them, so they are not just meant to be enjoyed, but also to be contemplated more deeply.
I agree that sharing techniques can be very helpful for beginners. In creating my collages, I use Adobe Photoshop CS6. There isn’t a specific technique I follow; I just focus more on adjusting the lighting to create a dramatic effect and balancing the color play. Every piece of art has its own uniqueness, so trust your ideas.
I hope this information helps you on your creative journey. Keep creating, and you'll find what you're looking for. Have a wonderful day!