Regarding Dahlia is a lovely versatile Stampset, Love Love Love the flower, you can have it super girly or with different colours make it bold and simple.
I used the Stampin Up! blender pens to colour the strawberry slush ink on the Dahlia, It gives a lovely dimensional affect. Stampin Up! are just about to release new Blendabilities pens, which are just as good if not better than Copics. will update in July about these great pens and how great they work. I don't own any yet...... YET!!