Kantarou+Haruka - Spider Lily Promise [uncoloured]

Hi there this is my first ever picture of these two from the anime / manga Tactics. I've been meaning to draw one for some time now but never got round to it. I think it's because I have no confidence in my drawing skills at all. I know it's only a rough sketch so far but I was thinking of doing this one canvas or may be paint it then put it on a cardboard background but I haven't decided which yet.

Well I hope you like the picture any way.