Summary

I had to edit the model a little bit in Slic3r PE so it can be printed on Prusa MK3 (the original model is too big for this printer):

First I scaled the model down to 94%.
I cut 4 mm at the bottom (so the holder is smaller)
I cut everything above 209 mm (so the inner leafs are a little bit shorter)

Print Settings

Printer Brand:

Prusa

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>i3 MK3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>15%</p></div></p>

Artichoke Lamp Shade for Prusa MK3