firstly, ur sig's rather too bland imo. plus the renders seem to be reallly bad quality o_o.....specially the second one. (whats weird...is it looks like its the same render but flipped.....yet the quality's worse......-_-)
otherwise its ok ^ ^, v1 defi better
regards to ur sister's sig well lol...i believe shes pwned u

thats amazing imo ^ ^
and for a first sig....well theres no word for it lol
one thing i gotta ask her....what font is that!?! (text is perfect imo...and text is one of the hardest things to get right)
oh one thing id say. is maybe she could use a smaller size. the sig's a bit too large for my liking and its nicer when the width is much greater in comparison to the height. (the more rectangular it is, the better)