have you considered larger pieces such as a console table or writing desk?
These are simple tops attached to a set of 4 legs which is connected by aprons. A small center drawer can be added.
Building a dolls table, childs table or an adult size table requires the same exact techniques. just bigger pieces.
You will reach a point where you will have to challenge yourself if you are to acquire greater skills. If you wait til you think you are ready for the next step, that time may never come. It's easier than you think to build a console table. Annnnnnnnnnnnd, we will be here if you need help. Just keep the design simple.
Tony B Retired woodworker, among other things.
"Strive for excellence and settle for completion" Tony B