It's all about your own style - and here is one I made while experimenting with a technique.
I wanted to a) emboss and b) colour with embossed surfaces.
Here's what I did:
1) inked my 4 1/4 x 5 in Very Vanilla cardstock with all sorts of ink colours using sponges,
[you can ink a larger surface area and cut it after colouring]
2) next using a damask-style embossing folder I sandwiched the inked cardstock and pressed it through my BIG SHOT,
3) using a separate sponge to swipe black ink over the entire piece softly thus affecting only the raised surface created by the embossing folder,
4) decorated the front with a black heart using my Heart Punch, and a blue circle with my 1 inch Circle Punch and attached them with a black flower brad.
Sorry lighting doesn't show how beautiful the colours are in contrast with the black! Try a more dramatic valentine's card this year! Cheers :)