This will be a very hard comment because I dont know what style u used and if the pic came out the way you expected.Well it´s a very good try and the lineart/pose are so well designed.For my personal view (this is only my personal opinion) :
I think the idea of making the lineart in light purple haves positive aspects and negative aspects .It´s original and adds an interesting effect.Do you remember when I told you about the color combinations?In this one u mostly use dark blue and purple && dark purple.It´s a posible combination but not making the bg dark and the lineart light.It looks like an inverted picture but in nature Im used to see dark and light over pictures and with inverted ones u cant add those details.If you want my opinion try this:
Jeans blue with a purple t-shirt that is normal purple .The hair can be black but the bg haves to be entirely white and the lineart in normal black.That will work a lot better in the pics concept but if you wanted this kind of picture you will have to investigate a lot since inverting is a very hard technik to use .

Try this kind of effects on the bg they work better.Dominant pic pocolor purple---(dark picture) .

PD.Purple and skin dont make a nice combination they are very different colors (both cold).Hope this helps and there is no offence.

Angel

This is very nice!
Its very cute and prettyful too! :3
Maybe you can call it something like...I dunno! My brain's shutting down ...something like What I'll keep deep inside my heart...I dunno..Sorry >.

I think with the way you have it done, you could call it "Memories" and have the shadowy figure as a ghost of a love she once held dear. Okay. Maybe not very helpful. Sorry. Just a thought. Nice artwork anyway.