Karen,
Only you know the standard of your electronics knowledge and capabilities.
If you are in doubt then ask your TUTOR for guidance. This is a part of their function.
Once you have a idea then flesh it out with how YOU mean to design and construct it. What is the purpose of the circuit? How does it - in your opinion - work?
THEN come back to the forum and present what you have done, be it a schematic or a link to a web page containing one, and your explanation of what it does - or should do, and THEN ask for help with confirming that it does what you require or changes in design/components to achieve what you desire.
Over a number of years I have seen many questions such as yours and the majority of them are just attempts to have the work done by someone else.
This does stop a lot of people giving help.
If you do as I have proposed then you will find more people willing to help to solve your problems as they will see that you wish to learn and are willing to TRY.
Once you present something to the forum then I will, if I am able, help