Solidify Horse Keepsake STL Model

I already have a finished horse-shaped birth keepsake in STL format, but in its current state it slices into several stackable layers with recessed pockets through the lower / centre area. All I need is a clean-up so the model prints as one continuous, flat-bottomed piece while the overall silhouette, proportions, tail detail and the small love-heart recess remain untouched.

You’ll receive:
• the original STL
• a set of reference photos that show the intended look

Please delete every other recess in the lower section, merge the stacked parts into a single manifold body, and give me an error-free, watertight STL ready for FDM printing. I’m not sure which program the model came from, so use whichever software you’re most comfortable with (Fusion 360, Blender, Meshmixer, etc.) as long as the exported file passes a quick slice preview without gaps or stray shells.

Deliverable:
• Updated, print-ready STL of the keepsake as one solid piece

I’ll confirm completion by checking the file in Cura and running a small test print, so accuracy to the original outline is essential. Looking forward to a swift turnaround!