STL Coding for Heart Pendants

I need STL file creation for two medium-sized heart-themed pendants. One pendant features a heart with a cross in the center, and the other has a heart with an hourglass in the center. Both pendants should have a moderate level of detail - not overly complex, but interesting enough to stand out. Ideal candidates should have a strong background in CAD and 3D modeling, with prior experience in designing for 3D printing.i would like the hourglass to look nicer phone number 903 380 8904