Hi,
I recommend to draw the part as "top view", then don´t use bNames, bValues, or other lothers for bottom side. This is very rarely necessary only.
If you want the part to be assembled on the bottom side, then just use the MIRROR command in the BOARD window.
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Don´t add your measures to the tPlace layer. Use the MEASURES layer.
Don´t add wires to mark the center of the capacitor. Just place the part center to (0 0)
Review your "+" and "-" markings
Give the parte a descriptive name in the library: like "ER16P75"
E for electrolytic capacitor
R for radial connections
16 for 16 mm diameter
P for pitch
75 for 7.5mm pitch
For sure you can create your own naming system.
Read through IPC rules to be able to design standard conform packages.
Klaus