problem with feed , images and links

Hello ..

i have problem with the plugin ..
i have setup the plugin and try to get more post but
i have got many post but i can choose the permalinks to go the source link or inside my site ..
and i have a little problem the size of the images is very different i have got the feed forum the other WordPress blog and the size is very different it's make the slider show very pad ..
and the organize the content i wont exactly the same