I was wondering if could add/create a Swimming Cap & Goggles Please?
Not entirely sure if you are requesting something be made for you or if you are wanting to create this and submit to Mod the Sims.
Be aware that requests are not allowed on Mod the Sims per this rule 17. No Requests: Please do not post threads with requests for content to be made for you, or post in threads (downloads, tutorials, or otherwise) with requests that things be made for you unless the creator has specifically stated that they don't mind requests in the thread. Site rules can be found Here
If you are wanting to create this item to submit to Mod the Sims you can find the guidelines for creation Here When you think you have properly satisfied those requirements, you can select the upload items button found under the section titled "upload" at the top of the screen.