The Girl and the Flowers

That's my cousin right there.
She's kinda cute. Haha.

Anyways, does anyone know a good way to patch up work scanned in parts?

I tried joining the two parts of the picture together (you see, my scanner can only scan a maximum of A4 size...my work was on some other larger than A4 size), and there was this line where the picture joined. And then I tried patching up the line...and look where it got me...
I suck at this