Need help.. where do the commas go?

Question

I cant seem to remember where to put the comma/s near the however..

so, if you could help me out..thanks!

here:
........commonly found in Greek and Roman artwork,however, it’s not just the Greek and Roman artwork where this type of design can be found.

Answer 1

If you use "however," then it should be two separate sentences and then only if you elaborate on the point by discussing where else that type of design can be found.

… commonly found in Greek and Roman artwork. However, it’s not the only place where this type of design can be found. One example is …

Otherwise, "but" is abetter word to use in the middle of the sentence:

… commonly found in Greek and Roman artwork, but it’s not the only place where this type of design can be found.

Note also, the sentence reads better without the repetition of "Greek and Roman artwork" :-)

Answer 2

put a semicolon before the word "however." Depending on how long the first part is, you could break it into two sentences.

....commonly found in Greek and Roman artwork. However,...

or
....commonly found in Greek and Roman artwork; however, ...

Personnally I would modify the second part to read "...however, it is not found only in Greek and Roman artwork." (this assumes the first part says something about the design being found in Greek and Roman artwork)

Answer 3

commonly found in Greek and Roman artwork, however it's not just the Greek and Roman artwork whre this type of design can be found.

We have a tendancy to write like we talk, so the comma after the however seems natural.