You do not need Photoshop or Gimp anymore and you do not have to work with layers.
Just take a screenshot of your application and put this into the Screen maker.
It will do the best screenshot of your application, ready to post on your website or blog.
In short, this application allows to connect 2 images: screenshot and smartphone image, the result is image ready to post on website or blog.
Screen maker supports 12 kinds of resolutions:
240x320, 320x480, 480x800, 480x854, 540x960, 640x960, 600x1024, 720x1280, 768x1280, 800x1280,1080x1920 1600x2560
and landscape mode.
After finished work, you can see your image or share it.
Devices
*Nexus smartphones
Nexus One
Nexus S
Galaxy Nexus
Nexus 4
Nexus 7
Nexus 10
*HTC smartphones
HTC One
HTC DNA
HTC One X
HTC One X+
HTC One V
HTC One S
HTC Evo 4G LTE
HTC Evo 3D
HTC Incredible S
HTC Sensation
HTC Desire X
HTC Desire HD
HTC HD2
HTC Wildfire S
HTC Explorer
HTC Dream
HTC Eris
HTC Jetstream
HTC Desire S
HTC Desire Z
*Samsung smartphones
SGS 4
SGS Advance
SGS
SGS2
SGS3
SGS3 mini
Samsung Note 2
Samsung Note
Samsung Y
Samsung W
Samsung ACE
Samsung Galaxy Tab 2 7.0
Samsung Galaxy Tab 10.1
Samsung Galaxy Exibit 4G
Samsung Galaxy Mini 2
Samsung Galaxy Mini
Samsung Gio
*Sony smartphones
Sony Xperia Z "Yuga"
Sony Xperia ZL
Sony Xperia S
Sony Xperia P
Sony-Ericsson Xperia X10
Sony-Ericsson Xperia Arc S
Sony Xperia Tipo
Sony Xperia Ray
Sony Xperia T
Sony Xperia Play
Sony Xperia Miro
Sony Xperia Mini
Sony Xperia Sola
*Motorola Smartphones
Motorola Photon 4G
Motorola Razr
Motorola Motoluxe
Motorola Atrix 4G
Asus Transformer
Meizu MX
ZTE Blade
ZTE Skate
Kindle Fire
LG Optimus G