Redesign an Android UI

I need a good Android designer to redesign the UI of my app. This is a quick money job for a good android ui designer. I created this UI as a prototype myself using the basic controls using Android Studio. Now I need it to be more professional looking as I am going to integrate more functionalities to it. This app is a simple text-to-speech app that allows the user to type something, then hit the download button to have the audio generated, there is a checkbox that allows the user to auto-play the audio when it's downloaded, a play button to play the last generated audio, a share button and a save button. This is what is done today. The new functionalities that I want are: allow the user to select a Voice from a list to generate the audio; allow the user to select the Language from a list to generate the audio; allow the user to select the Speed, Pitch and Timbre used to generate the audio. These controls are usually sliders that goes from 0 to 100, but feel free to suggest something different. a menu (on the top toolbar probably) that I can add extra items i.e.: "share this app", "about" etc. Please have a look at the attached image and consider the new functionalities. The deliverable will be a xml layout file along with all the extra images/resources you used ready to be imported into my android studio project. No programming required. All the images you use will need to be in vector (.xml) format. Don't copy and paste messages on your bid, I'll ignore them. I expect to receive messages showing that you understood the requirements. Show me previous UIs you have done before. The app is currently using minSdkVersion = 15 and targetSdkVersion = 22.