I need editing, resizing of photos to be done in photoshop.

i Have pictures where i need the editing of background to be done, i need to add length to few items as per proportions, cut few things etc, resizing of picture to size i need, mostly its 7x10" or 8x10". In below pic i want black background, and i want the gadda to be cut form the top and the rod of gadda should touch the end of the picture. so to make it proportionate that rod does not look too long yu might have to start gadda right form the top of Hunamaji hand.