You don't have to post a new thread every time you want to "test" the quality of an uploaded photo. It's not going to lose resolution or quality if you link it to a post from imageshack or photobucket or whatever. It will look the same in this thread as it will on the hosting site.
If you're sharing your tests on the internet, then presumably, you think that others will be interested in, or entertained, or able to learn from, or give comment to whatever it is that you're testing. So some background to the test image would be appropriate - what the test is about, what you think "should" happen, and what you observe to actually happen. Presumably, if the results of the test are not according to your expectation, you would ask the other members what they would do, think, or propose to do differently, based on your stated starting point and test objectives. As it is, I have a hard time understanding what the purpose of the test is, and what you hope to gain by sharing it with us, and what cotnribution we can make to help you. There is nothing wrong with posting tests per se - I've participated in many forum discussions where a member posted his test and we would give suggestions and comments, and the OP would work iteratively to a successful result. But it does help to know what the purpose of the test is, and what help we can give.