Photo editor for WP7, what do you think?

Hi ,all. I am new here. And can you give me some advises

After weeks of efforts,I finish developing my photo editing App for windows phone 7,Version 1.3(dont care about its version , It makes sense only to me),and I named it PonyPhoto.
normal function:
*Multiple image effects. PonyPhoto comes with various effects such as Invert, Grayscale,Jitter, Water Wave, Gamma Correction,Oil Painting, Rotate Channel, etc.Totally 18 kinds of effects.
*Collage. Various Collages templates are available for compositing different photos to generate a new one; and editing the saved collage image with other features.
*Frames in various styles. Like simple frames, glaring frames, and color frames
*Image color adjustments. It is to adjust with brightness and contrasts on a selected photo.
*Changing image’s shape and size . To rotate or cut a photo to generate a new one.
*Images save and share. To save the edited images to the default directory, or send them to Facebook, Twitter, Flickr .
unique function:Composite photos to a .gif image.PonyPhoto could add several photos into a dynamic image with .gif format, and I didnt find any other app that could do this

snapshots:
http://www.ponyphotoeditor.com/image...reenshot-1.png http://www.ponyphotoeditor.com/image...reenshot-5.png http://www.ponyphotoeditor.com/image...reenshot-6.png

Readmore about the App:http://www.ponyphotoeditor.com/
Free Download Link: http://www.windowsphone.com/en-US/ap...9-8718d5ec3432

I add everything fitable I can think to the App ,and I want to make my App better ,so I need you guys advise. Is there any function I can add or I should change? Any suggestion or criticism is appreciated.THX ahead.