Hello, Kraftie Friends!
These cards have the Mixed-Media look...but without the mess!
Here's how to make mess-free mixed media cards:
Card #1
Then, I added them on a die cut panel with foam tape. Sentiment (Daisy Meadows Cardmaking Workshop Kit) was paper pieced on 2 different pp. Dots were done using ColorBox Smooch.

#3 This is also a printed pp that already have the Mixed Media look...I trimmed a panel for the card front, making sure I got the houses I wanted.
Card #2
#2 Look for patterned papers that already look "mixed media-ish" and use the scraps to make a freestyle collage card.
Sentiment and Bird are from April Stamp of The Month - Scandinavian Folk Art Greetings ($18.95, $5 with a $50 purchase or FREE as a CTMH VIP Customer) and stitches from Stitched Together - Cardmaking stamp set.
Card #3

Then, I added a die cut poinsettia + stamping. Flower's center is also done with ColorBox Smooch. Sentiment is from a retired Craft With Heart Cardmaking Kit.
Challenges:
Card #1
1. CAS Mix Up April Mixed Media: Paper Piecing
2. Simon Says Wed: Clean and Simple
3. Simon Says Mon: Bright, Cheerful Colors
4. Happy Little Stamper April AGoes with Dies
5. Crafty Animals #49: AGoes with an Animal
Card #2
1. Inkspirational #237 - Taxi Picture
2. Gem of a Challenge #8 - Craft & Cardmaking AGoes
Card #3
1. ABC Christmas: H & I are for? (H for Home/Houses)
2. CHNC #538: AGoes Christmas Optional Theme Include a House or Other Building
3. Christmas Crafts All Year 'Round April Challenge - Something that starts with G and/or H (Gold/Houses)