Our first steps help file and our FAQ will help you a lot after registration. They explain how to customize the interface (for example the language), how to upload files and our basic licensing policy. You don't need technical skills in order to contribute here. Be bold contributing here and assume good faith for the intentions of others. This is a wiki ‒ it is really easy.
There seems to be a problem regarding the description and/or licensing of this particular file. It has been found that you've added in the image's description only a Template that's not a license and although it provides useful informations about the image, it's not a valid license. Could you please resolve this problem, adding the license in the image linked above? You can edit the description page and change the text. Uploading a new version of the file does not change the description of the file. This page may give you more hints on which license to choose. Thank you.
Thank you for providing images to Wikimedia Commons. Please keep in mind that images and other files on Commons must be under a free license and should be useful to the Wikimedia projects. To allow others to use your files, some additional information must be given on the description page. Most importantly:
Describe what it is about in a short sentence. (What does the image show?)
State the author and the date of creation. If you made it yourself, say so explicitly. If it is from another Wikimedia user, link to the person's local user page. Best to use CommonsHelper.
If you did not create the file yourself, state the source you got it from.
Add a copyright tag - images without an appropriate license tag will be deleted.
Add the image to one or more gallery pages and/or appropriate categories, so it can be found by others. To find out where an image belongs, you can use CommonsSense.
If you copied the file from another wiki, please copy all information given there and say who uploaded it to that wiki. Use CommonsHelper.
You can edit the description page and change the text. Uploading a new version of the file does not change the description of the file.
Please add as much information as possible. If there is not sufficient information, the file may have to be deleted. For more information, follow the Commons:First steps guide. If you need help or have questions, please ask at the Help desk.
The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.
Unfortunately, your account clashes with another account also called Imoni. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Imoni~commonswiki that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.
Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.