Hi The Rattle Remix Line, Thanks for your feedback. Although you can’t currently crop in any other shape than a rectangle, there are other ways to achieve some of the effects you’ve mentioned.
– To create a circle crop: try the Frames tab > Rounded Edges and increase Corner Radius to the maximum setting.
– To crop something specific out of your photo: try the Doodle effect (towards the end of the Effects tab). From here you can paint over areas of your photo. You can select a color from your image by clicking the color selector and then clicking your image.
– Lastly, there are some more advanced selection tools such as Lasso within the Pro tab > Pro Editor > Pixlr Editor.