Opencart web developer expert to modify theme/finalise website

I have a kids lifestyle website set up in opencart which needs finalising. Most of it is done but i need some help in making the final touches/recommend altering some of the layout/modules design and checking for errors etc. I also need help in making sure all social network buttons are set correctly. This is not a big job but i will need help from time to time to change/alter/ add modules as we go along. Please either quote an hourly rate or project rate and also 'kids'