Don't use the stoma filler paste, especially on broken skin, the filler paste made my situation worse; it contains alcohol.
Filler paste is totally different to the ilex paste; ilex is a barrier paste which protects the skin.
I used a ConvaTec Convex Esteem Synergy mouldable base/flange; no need to cut a hole, just measure stoma with template and choose nearest size.
Once the correct size has been acquired, apply it over the stoma and stoma collar (remember, apply the ilex paste around the stoma first) and attach the bag.
I could easily wear this for up to 3 or 4 days before it started to look grubby (when showering and not changing it, shield it from contact with water; same if bathing, don’t allow it to soak in warm bath water, it will start to detach.
https://www.convatec.com/produ...hesive-skin-barrier#
To keep things sung; I wore Comfizz high waist stoma wear boxer shorts; kinda like cycling shorts but with a much higher waist; designed to flatten and help disguise the colostomy bag under clothing, whilst providing support.
I still wear their conventional waist boxer shorts, even now.