This is definitely a common problem with foundations homemade and store bought. Lotion type lotions normally do this less then powders. Id say try mixing some foundation with your face lotion right before use and see how that goes.
You'll need to upload them to a free image hosting service first—Imgur (http://imgur.com/) is great and doesn't require you to sign up for an account. Simply click " New Post" at the top of the page, drag your images into the window that pops up, and the images will automatically upload. From there you can hover the images and copy the URL that appears; simply paste that URL into your post on a new line and the image will appear automatically when you post!